WO2018077697A1

WO2018077697A1 - A method and a system for enhancing hand hygiene

Info

Publication number: WO2018077697A1
Application number: PCT/EP2017/076611
Authority: WO
Inventors: Anders Dam KOFOED
Original assignee: Accipio Aps
Priority date: 2016-10-25
Filing date: 2017-10-18
Publication date: 2018-05-03
Also published as: EP3531885C0; EP3531885A1; EP3531885B1

Abstract

A method and a system for enhancing a person's hand hygiene after a visit to a user area. The user area is separate from a sanitary area, and the user area may for example comprise a toilet or the user area can be a patient's room, while the sanitary area may comprise a hand cleaning device. The method comprises detecting when a person enters the user area and detecting whether a person leaves the user area and a person enters the sanitary area following the detection of a person entering the user area. A first detection time period is determined based on the detection of a person entering the user area and a successive detection of a person leaving the user area while at the same time a person enters the sanitary area. It is then determined whether the first detection time period is equal to or larger than a predetermined minimum use-period, and in case the first detection time period is equal to or larger than the predetermined minimum use- period, a first sanitary remind signal is issued. The enhancement of a person's hand hygiene may include hand washing and/or hand disinfection, thus a cleaning agent dispenser may be provided within the sanitary area, and the method may further comprise detecting whether the cleaning agent dispenser is used within a predetermined sanitary- period following the successive detection of a person leaving the user while at the same time a person enters the sanitary area, and in case there is no detection of use of the cleaning agent dispenser within said predetermined sanitary-period, a second sanitary remind signal may be issued. The first sanitary remind signal may be a visual signal, and the second sanitary remind signal may be an audible signal.

Description

A METHOD AND A SYSTEM FOR ENHANCING HAND HYGIENE TECHNICAL FIELD The disclosure relates generally to method and a system for enhancing a person's hand hygiene during a visit to a user area. In particular, the disclosure relates to a method and a system for automated issuance of one or more prompting signals that may increase the frequency of handwashing. BACKGROUND

Handwashing and/or hand disinfection is the linchpin of infection control. Failure to conduct handwashing and/or hand disinfection after toileting or prior to contact with a patient places patients and health care workers at great risk for the development of nosocomial infections. While health care workers play a powerful role in reducing nosocomial infections, they have also been implicated in contributing to their increase by failing to perform handwashing prior to contact with a patient and after handling contaminated materials. Although health care workers are required to participate in annual infection control in service inspections, there is a discrepancy between classroom knowledge and applied knowledge of infection control. This discrepancy suggests that innovative strategies in infection control must be created in order to reduce the rate of nosocomial infections.

US 6,975,231 discloses a method and apparatus that systematically prompts staff, patients and visitors at care facilities to perform handwashing at critical time periods, for example after touching a toilet flush handle or upon entering or leaving a patient's room. A plurality of detectors are used to sense whether a person has entered an area and to determine whether the person has cleansed their hands within a predetermined period of time before entering the area or leaving the area. If it is determined that the person has cleansed their hands within the predetermined period of time, no prompting message is generated. If it is determined that the person has not cleansed their hands within the predetermined period of time, an audio/visual warning message is generated. EP 2478502 discloses a system and a method for motivating and/or prompting persons to wash hands. The system comprises a sensor for detecting use of a toilet or a urinal, which sensor creates a first signal indicative of that use have been detected. The system comprises a signalling means for in response to the first signal issuing at least one second signal reminding and/or prompting to use a cleansing agent dispenser.

However, these existing systems are relatively complex, and it would be advantageous to have a simple, yet effective system for enhancing a person's hand hygiene after a visit to a user area.

SUMMARY

It is an object of the invention to provide a method and a system for enhancing a person's hand hygiene after a visit to a user area, which system is cost effective and applicable for several different user areas.

According to a first aspect there is provided a method for enhancing a person's hand hygiene after a visit to a user area, wherein the user area is separate from a sanitary area, said method comprising:

determining a first point in time of detection when a person enters the user area; determining a second point in time of a successive detection of whether a person leaves the user area while at the same time a person enters the sanitary area following said detection of a person entering the user area at the first point in time;

determining a first detection time period based on the determined first point in time and the determined second point in time;

determining whether the first detection time period is equal to or larger than a predetermined minimum use-period; and

issuing a first sanitary remind signal when the first detection time period is equal to or larger than said predetermined minimum use-period.

In a possible implementation form of the first aspect, the sanitary area is adjacent to the user area. It should be understood that the enhancement of a person's hand hygiene after a visit to a user area may be directed to having the person washing hands and/or disinfecting hands after a visit to a user area. Thus, in a possible implementation form of the first aspect, a cleaning agent dispenser is provided within the sanitary area.

In a possible implementation form of the first aspect, the method further comprises detecting whether the cleaning agent dispenser is used after the determined second point in time; and terminating the first sanitary remind signal when use of the cleaning agent dispenser is detected after the determined second point in time.

In a possible implementation form of the first aspect, the method further comprises detecting whether the cleaning agent dispenser is used within a predetermined sanitary- period following the determined second point in time; and issuing a second sanitary remind signal when there is no detection of use of the cleaning agent dispenser within said predetermined sanitary-period.

In a possible implementation form of the first aspect, the cleaning agent dispenser holds a dispenser use sensor for detecting use of the cleaning agent dispenser. In a possible implementation form of the first aspect, one or more motion sensors are provided for detecting whether a person is in the user area, and for detecting whether a person is in the sanitary area.

In a possible implementation form of the first aspect, a first motion sensor is provided for detecting whether a person is in the user area, and a second motion sensor is provided for detecting whether a person is in the sanitary area. In an alternative embodiment of the first aspect, a first motion sensor is provided for detecting whether a person is in a combined area comprising the user area and the sanitary area, and a second motion sensor is provided for detecting whether a person is in the sanitary area.

In a possible implementation form of the first aspect, the cleaning agent dispenser holds said one or more motion sensors. In a possible implementation form of the first aspect, the cleaning agent dispenser holds processing circuitry configured to determine the first point in time, the second point in time, and the first detection time period based on inputs from said one or more motion sensors; determine whether the first detection time period is equal to or larger than a predetermined minimum use-period; and issue the first sanitary remind signal when the first detection time period is equal to or larger than said predetermined minimum use-period.

In a possible implementation form of the first aspect, the processing circuitry is further configured to determine based on inputs from the dispenser use sensor whether the cleaning agent dispenser is used following the determined second point in time; and terminate the first sanitary remind signal when use of the cleaning agent dispenser is detected after said successive detection of a person leaving the user area and a person entering the sanitary area. In a possible implementation form of the first aspect, the processing circuitry is further configured to determine whether the cleaning agent dispenser is used within said predetermined sanitary-period based on inputs from the dispenser use sensor; and issue a second sanitary remind signal when there is no detection of use of the cleaning agent dispenser within said predetermined sanitary-period.

In a possible implementation form of the first aspect, the first sanitary remind signal is a visual signal.

In a possible implementation form of the first aspect, the second sanitary remind signal is an audible signal.

According to the first aspect there is also provided a system for enhancing a person's hand hygiene after a visit to a user area, wherein the user area is separate from a sanitary area, said system comprising:

one or more motion sensors configured to detect whether a person is in the user area, and to detect whether a person is in the sanitary area; and

processing circuitry configured to determine when a person enters and leaves the user area and when a person enters and leaves the sanitary area based on detection signals from said one or more motion sensors;

determine a first detection time period based on a first point in time of detection of a person entering the user area and a second point in time of a successive detection of a person leaving the user area while at the same time a person enters the sanitary area; determine whether the first detection time period is equal to or larger than a predetermined minimum use-period; and

issue a first sanitary remind signal when the detection time period is equal to or larger than said predetermined minimum use-period.

In a possible implementation form of the system of the first aspect, a cleaning agent dispenser is provided within the sanitary area. In a possible implementation form of the system of the first aspect, the cleaning agent dispenser holds said one or more motion sensors. In a possible implementation form of the system of the first aspect, the cleaning agent dispenser holds said processing circuitry.

In a possible implementation form of the system of the first aspect, the system further comprises a dispenser use sensor for detecting use of the cleaning agent dispenser. In a possible implementation form of the system of the first aspect, the cleaning agent dispenser holds the dispenser use sensor.

In a possible implementation form of the system of the first aspect, the processor circuitry is further configured to determine based on inputs from the dispenser use sensor whether the cleaning agent dispenser is used following the second point in time of said successive detection of a person leaving the user area while at the same time a person enters the sanitary area; and terminate the first sanitary remind signal when use of the cleaning agent dispenser is detected after the second point in time of said successive detection of a person leaving the user are and a person entering the sanitary area.

In a possible implementation form of the system of the first aspect, the processor circuitry is further configured to determine whether the cleaning agent dispenser is used within a predetermined sanitary-period following the second point in time based on inputs from the dispenser use sensor; and issue a second sanitary remind signal when there is no detection of use of the cleaning agent dispenser within the predetermined sanitary-period.

In a possible implementation form of the system of the first aspect, the one or more motion sensors comprise a first motion sensor configured to detect whether a person is in the user area, and a second motion sensor configured to detect whether a person is in the sanitary area. In an alternative embodiment of the system of the first aspect, the one or more motion sensors comprise a first motion sensor configured to detect whether a person is in a combined area comprising the user area and the sanitary area, and a second motion sensor configured to detect whether a person is in the sanitary area.

In a possible implementation form of the system of the first aspect, the processing circuitry is configured to determine when a person enters and leaves the user area based on inputs from both the first and second motion sensors, and to determine when a person enters and leaves the sanitary area based on inputs from the second motion sensor.

In a possible implementation form of the system of the first aspect, the sanitary area is adjacent to the user area. In a possible implementation form of the system of the first aspect, the system further comprises a display unit and/or and audio unit for visual display and/or audible issuance of the first and/or second sanitary remind signals.

According to a second aspect there is provided a cleaning agent dispenser for enhancing a person's hand hygiene, said cleaning agent dispenser comprising a motion detection system comprising:

one or more motion sensors configured to detect whether a person is in a first area, and further configured to detect whether a person is in a second area; wherein the first area is separate from the second area.

In a possible implementation form of the second aspect, the one or more motion sensors comprise a first motion sensor configured to detect whether a person is in the first area, and a second motion sensor configured to detect whether a person is in the second area. In an alternative embodiment of the second aspect, the one or more motion sensors comprise a first motion sensor configured to detect whether a person is in a combined area comprising the first area and the second area, and a second motion sensor configured to detect whether a person is in the second area. In a possible implementation form of the second aspect, the motion detection system comprises processing circuitry configured to determine when a person enters the first area and when a person enters the second area based on inputs from the one or more motion sensors. In a possible implementation form of the second aspect, the processing circuitry is configured to determine when a person enters and leaves the first area based on inputs from both the first and second motion sensors, and to determine when a person enters and leaves the second area based on inputs from the second motion sensor. In a possible implementation form of the second aspect, the cleaning agent dispenser holds a dispenser use sensor for detecting use of the cleaning agent dispenser.

In a possible implementation form of the second aspect, the processor circuitry is further configured to determine whether the cleaning agent dispenser is used based on inputs from the dispenser use sensor.

The foregoing and other objects are achieved by the features of the independent claims. Further implementation forms are apparent from the dependent claims, the description and the figures. These and other aspects of the invention will be apparent from the embodiments described below.

BRIEF DESCRIPTION OF THE DRAWINGS

In the following detailed portion of the present disclosure, the invention will be explained in more detail with reference to the example embodiments shown in the drawings, in which:

Fig. 1 is an illustration of a combination of a user area and a sanitary area according to an example embodiment; Figs. 2a and 2b illustrates detection areas of different motion sensor arrangements according to example embodiments; Fig. 3 is a block diagram showing a processing system for issuing sanitary remind signals according to an example embodiment;

Fig. 4 is an illustration of a cleaning agent dispenser according to an example embodiment; and

Fig. 5 is a flowchart illustrating processing steps for issuance of one or more sanitary remind signals according to an example embodiment.

DETAILED DESCRIPTION

Fig. 1 shows a combination of a user area 101 and a sanitary area 102 according to an example embodiment. The user area 101 and the sanitary area 102 may together form an enclosure or a combined area 100 having one or more entry points or doors 103a,b,c,d for entering/leaving the combined area 100. The combined area 100 may be a single room, which may have a single entry point or door 103a,b,c,d for entering/leaving the area 100. The area 100 may be divided into the user area 101 and the sanitary area 102 by one or more detection ranges of one or more motion sensors 106, where the motions sensors 106 are configured for detecting whether a person is within the user area 101 , and whether a person is within the sanitary area 102. It is preferred that the sanitary area 102 is adjacent to the user area 101. Based on signals from the motion sensors 106, it can be determined when a person leaves the user area 101 and when a person enters the sanitary area 102, and it can also be determined, when a person leaves the sanitary area 102 and when a person enters the user area 101. As illustrated in Fig. 1 , the entry points or doors 103a,b,c,d for entering/leaving the area 100 can be placed in different places, such as at an end-wall of the sanitary area 102, see entry point or door 103a, or at a side- wall of the sanitary area 102, see entry point or door 103b. An entry point or door may also be placed at an end-wall of the user area 101 , see entry point or door 103c, or at a side- wall of the user area 101 , see entry point or door 103d. No matter which entry point or door arrangement is selected, it can be determined based on the signals from the motion sensors 106, if a person enters the combined area 100, is within the user area 101 , is within the sanitary area 102, and it can also be determined when a person leaves the combined area 102.

The user area 101 holds one or more user devices 104, which can be used by a person visiting the user area 101 , and the sanitary area 102 holds one or more sanitary devices 105, which should be used when a person has used a user device 104 in the user area 101. The user device 104 can for example be a toilet 104a or a urinal 14b, but the user device 104 can also be a bed 104c and the user area 101 may be part of a patient's room. The sanitary devices 105 can be a sink 105a for washing hands and a cleaning agent dispenser 105b, but a shower 105c may also be provided within the sanitary area 102. It is preferred that at least a cleaning agent dispenser 105b is provided within the sanitary area 102 in order for a person to perform a cleaning of hands, which may be a washing of hands and/or a disinfection of hands.

It is within embodiments of the enclosure that both a sink 105a and a cleaning agent dispenser 105b are provided within the sanitary area 102. The disclosure also covers an embodiment in which the sanitary area 102 comprises a shower 105c and a cleaning agent dispenser 105b. If a person is to take a shower in the sanitary area 102, the person may use a cleaning agent from the cleaning agent dispenser 105b and perform a body wash, which will also include a hand washing.

Different types of motions sensors 106 may be used, including passive infrared (PIR) based motion detectors (PIR-based motion detectors), infrared array sensors such as the Panasonic Infrared Array Sensor Grid-EYE, and radar based motion detectors. The motion sensors 106 may also include a combination of these different motion sensors.

In order to distinguish between a person being in the user area 101 or in the sanitary are 102, two motions sensors 106 with different detection areas may be provided. This is illustrated in Figs. 2a and 2b, where in Fig. 2a the motion sensors 106a comprise a first motion sensor, which has a substantially 180° detection range illustrated by the dashed lines 201a and 201 b, and a second sensor, which has a substantially 90° detection range illustrated by the dotted lines 202a and 202b. Thus, in Fig. 2a the first motion sensor covers both the user area 101 and the sanitary area 102, whereas the second motion sensor covers only the sanitary area. If a motion signal is received from both sensors, a person is in the sanitary area 102 or at least partly in the sanitary area 102, and if a motion signal is received from the first sensor only, a person is in the user area 101.

In Fig. 2b the motion sensors 106b comprise a first motion sensor, which has a substantially 90° detection range illustrated by the dashed lines 203a and 203b, and a second sensor equal to the second sensor of Fig. 2a, which also has a substantially 90° detection range illustrated by the dotted lines 202a and 202b. Thus, in Fig. 2b the first motion sensor covers the user area 101 only, while the second motion sensor covers the sanitary area 102 only. If a motion signal is received from the first sensor only, a person is in the user area 101 , and if a motion signal is received from the second sensor only, a person is in the sanitary area 102. If a motion signal is received from both the first and second sensors, a person may be standing partly in the user area 101 and partly in the sanitary area 102, and in this situation it may be determined that the person is in the sanitary area 102.

It should be understood that the present disclosure also covers embodiments, in which the first and second motion sensors are configured with other detection range angles than illustrated in Figs. 2a and 2b.

In a preferred embodiment, the first and second motion sensors 106a are configured to have detection ranges 201a, 201 b and 202a, 202b as illustrated in Fig. 2a, and a person is determined to be in the user area 101 when a motion signal is received from the first motion sensor only, while a person is determined to be in the sanitary area 102 when a motion signal is received from both the first and the second motion sensors.

In order to determine a person's movement based on motion signals from the motion sensors 106, a processor or processing circuitry is provided to handle the motion signals. This is further illustrated in Fig. 3, which shows a block diagram of a processing system or motion detection system 300 for issuing sanitary remind signals according to an example embodiment. The system 300 comprises a first motion sensor, MS1 , 306a and a second motion sensor, MS2, 306b, which may be configured to have detection ranges as illustrated in Fig. 2a, and processor or processing circuitry 309 receiving motion signal inputs from the motion sensors MS1 and MS2, 306a and 306b.

A cleaning agent dispenser 105b is provided within the sanitary area 102, and the system 300 also holds a dispenser use sensor, DUS, 308, configured for detecting when the cleaning agent dispenser 105b is activated. The processor 309 receives input signals from the dispenser use sensor 308. The system 300 further comprises a display unit 302 for visual display of a first sanitary remind signal 303 (see Fig. 4) and an audio unit 304 for issuance of an audible second sanitary remind signal 305 (see Fig. 4). Based on input signals received from the motion sensors MS1 and MS2, 306a and 306b, and the dispenser use sensor 308, and further based on the timing on receipt of these input signals, the processor or processing circuitry 309 determines whether a first sanitary remind signal shall be issued by the display unit 302, and whether a second sanitary remind signal shall be issued by the audio unit 304.

The processing system 300 of Fig. 3 may be integrated into the cleaning agent dispenser 105b. This is illustrated in Fig. 4, which shows a cleaning agent dispenser system 400 according to an example embodiment. The dispenser system 400 holds a cleaning agent dispenser 401 having a dispenser output 407 and a processing system corresponding to the system 300 of Fig. 3, with a dispenser use sensor 308 placed to detect activation of the dispenser output 407, and with first and second motion sensors 306a, 306b placed on a front wall of the dispenser 401. The processor 309 is placed inside the dispenser 401 , and the display unit 302 is placed on side or front wall of the dispenser 401 for making the visual signal 303 visible. The audio unit 304 is placed in any convenient place within or at the dispenser 401 for issuance of the audible signal 305.

The dispenser system 400 may be arranged within the combined area 100 of Fig. 1 so as to replace the one more motion sensors 106, whereby the dispenser system 400 will be placed with the first and second motion sensors arranged for covering the user area 101 and the sanitary area 102. With this arrangement of the dispenser system 400, then when a person activates the cleaning agent dispenser 401 , at least part of the person will be sensed to be within the sanitary area 102, and the processor 309 will determine the person to be within the sanitary area 102. The processing steps performed by the processor or processing circuitry 309 in order to issue one or more sanitary remind signals based on the received sensor inputs is illustrated in the flowchart of Fig. 5. The first step, 501 , is to determine a first point in time t1 , when a person enters the user area 101. This can be determined based on inputs from the first and second motion sensors 306a and 306b. The next step, 502, is to determine a second point in time t2, following the first point in time t1 , when a person leaves the user area 101 while at the same time a person enters the sanitary area 102. This can also be determined based on inputs from the first and second motion sensors 306a and 306b. In step 503 it is now determined if a first detection time period, which is the period of time between the first detection point in time t1 and the second detection point in time t2 and equal to t2-t1 , is equal to or larger than a predetermined minimum use-period of time, Tmin, use. If t2-t1 is less than Tmin, use, then no sanitary remind signal is issued, step 504, while if t2-t1 is equal to or larger than Tmin, use, then a first sanitary remind signal is issued, step 505.

Following the detection the of a person entering the sanitary area 102 at the second detection point in time t2, it is determined whether the cleaning agent dispenser 105b is used within a predetermined sanitary-period of time, Td.use, starting from t2, step 506. This can be determined based on inputs from the dispenser use sensor 308. If an input from the dispenser use sensor 308 has be detected at a time t3 equal to (Td.use +t2), then no sanitary remind signals, neither a first nor a second sanitary remind signal, is issued, step 507. If no input from the dispenser use sensor 308 has be detected at the time t3 equal to (Td.use +t2), then a second sanitary remind signal is issued, step 508.

Following the issuance of the second sanitary remind signal at step 508, it is still determined whether a signal is received from the dispenser use sensor 308 indicating that the cleaning agent dispenser 105b is used, step 509. If a dispenser use signal is received within at maximum lapse period of time, Ts, max, following the time t3, then no sanitary remind signals, neither a first nor a second sanitary remind signal, is no longer issued, step 510. If no dispenser use signal is received within the maximum lapse period, Ts, max, i.e. at time t4 equal to (t3+Ts,max), step 51 1 , also then no sanitary remind signals, neither a first nor a second sanitary remind signal, is no longer issued, step 510. The value of the predetermined minimum use-period of time, Tmin.use, should be selected in accordance with the intended use of the user area 101. When the user device 104 is a toilet 104a, the value of Tmin,use may be set in the range of 40-80 seconds, such as about 60 seconds, and the value of the predetermined sanitary-period of time, Td.use, may be set in the range of 20-60 seconds, such as about 40 seconds. The maximum lapse period Ts.max may be set in the range of 10-40 seconds, such as about 20 seconds.

If the user area 101 is a patient's room and the user device 104 is a patient's bed 104c, then the person entering the user area 101 may be a health care worker taking care of the patient's bed 104c, which should be followed by the health care worker cleaning hands in the sanitary area 102. In this situation the value of the predetermined minimum use-period of time, Tmin.use, should be higher, and may be set in the range of 3-7 minutes, such as about 5 minutes, while the value of the predetermined sanitary-period of time, Td.use, may be still be set in the range of 20-60 seconds, such as about 40 seconds. The maximum lapse period Ts.max may also still be set in the range of 10-40 seconds, such as about 20 seconds.

It is preferred that the first sanitary remind signal is a visual signal, which may be visualised by a flash light, a diode display, a liquid crystal display, and/or a video monitor, and the visual signal my be a flash signal, a still motion signal, and/or a video motion signal. However, the disclosure also covers embodiments in which the first sanitary remind signal is an audible signal. It is preferred that the second sanitary remind signal is an audible signal, such as a beep tone, a tune or melody, and/or a human voice signal, but the disclosure also covers embodiments in which the second sanitary remind signal is a visual signal. If both the first and second remind signals are visual signals, the signals may be displayed at different frequencies within a display 302, with the second remind signal having a higher display frequency than the first remind signal. If both the first and second remind signals are audible sound signals, the sound signals may be issued from an audio unit 304 with different time intervals between succeeding signals, with the sound signals of the second remind signal having shorter time intervals than the sound signals of the first remind signal.

The invention has been described in conjunction with various embodiments herein. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude a plurality.

Any method described herein and in the claims may be supplemented by any features of the apparatuses and systems described herein and in the claims in terms of method features.

Claims

1. A method for enhancing a person's hand hygiene after a visit to a user area, wherein the user area is separate from a sanitary area, and wherein one or more motion sensors are provided for detecting whether a person is in the user area and for detecting whether a person is in the sanitary area, which method comprises:

determining a first point in time of detection when a person enters the user area; determining a second point in time of a successive detection of whether a person leaves the user area while at the same time a person enters the sanitary area following the first point in time of detection of a person entering the user area;

issuing a first sanitary remind signal when the first detection time period is equal to or larger than the predetermined minimum use-period.

2. A method according to claim 1 , wherein the sanitary area is adjacent to the user area.

3. A method according to claim 1 or 2, wherein a cleaning agent dispenser is provided within the sanitary area.

4. A method according to claim 3, further comprising

detecting whether the cleaning agent dispenser is used after the determined second point in time; and

terminating the first sanitary remind signal when use of the cleaning agent dispenser is detected after the determined second point in time.

5. A method according to claim 3 or 4, further comprising

detecting whether the cleaning agent dispenser is used within a predetermined sanitary-period following the determined second point in time; and

issuing a second sanitary remind signal when there is no detection of use of the cleaning agent dispenser within the predetermined sanitary-period.

6. A method according to claim 4 or 5, wherein the cleaning agent dispenser holds a dispenser use sensor for detecting use of the cleaning agent dispenser.

7. A method according to any one of the claims 1 to 6, wherein a first motion sensor is provided for detecting whether a person is in the user area, and a second motion sensor is provided for detecting whether a person is in the sanitary area.

8. A method according to any one of the claims 1 to 6, wherein a first motion sensor is provided for detecting whether a person is in a combined area comprising the user area and the sanitary area, and a second motion sensor is provided for detecting whether a person is in the sanitary area.

9. A method according to claim 3 or any one of the claims 4 to 8 when depending on claim 3, wherein the cleaning agent dispenser holds the one or more motion sensors.

10. A method according to claim 3 or any one of the claims 4 to 9 when depending on claim 3, wherein the cleaning agent dispenser holds processing circuitry configured to determine the first point in time, the second point in time, and the first detection time period based on inputs from the one or more motion sensors;

determine whether the first detection time period is equal to or larger than a predetermined minimum use-period; and

issue the first sanitary remind signal when the first detection time period is equal to or larger than the predetermined minimum use-period.

1 1. A method according to claims 6 and 10, wherein the processing circuitry is further configured to

determine based on inputs from the dispenser use sensor whether the cleaning agent dispenser is used following the determined second point in time; and

terminate the first sanitary remind signal when use of the cleaning agent dispenser is detected after the successive detection of a person leaving the user area and a person entering the sanitary area.

12. A method according to claims 5, 6 and 10 or 11 , wherein the processing circuitry is further configured to

determine whether the cleaning agent dispenser is used within the predetermined sanitary-period based on inputs from the dispenser use sensor; and

issue a second sanitary remind signal when there is no detection of use of the cleaning agent dispenser within the predetermined sanitary-period.

13. A method according to any one of the claims 1 to 12, wherein the first sanitary remind signal is a visual signal.

14. A method according to any one of the claims 5 to 13, wherein the second sanitary remind signal is an audible signal.

15. A system for enhancing a person's hand hygiene after a visit to a user area, wherein the user area is separate from a sanitary area, which system comprises:

processing circuitry configured to

determine when a person enters and leaves the user area and when a person enters and leaves the sanitary area based on detection signals from the one or more motion sensors;

issue a first sanitary remind signal when the detection time period is equal to or larger than the predetermined minimum use-period.

16. A system according to claim 15, wherein a cleaning agent dispenser is provided within the sanitary area.

17. A system according to claim 16, wherein the cleaning agent dispenser holds said one or more motion sensors.

18. A system according to claim 16 or 17, wherein the cleaning agent dispenser holds said processing circuitry.

19. A system according to any one of the claims 16 to 18, further comprising a dispenser use sensor for detecting use of the cleaning agent dispenser.

20. A system according claim 19, wherein the processor circuitry is further configured to

determine based on inputs from the dispenser use sensor whether the cleaning agent dispenser is used following the second point in time of said successive detection of a person leaving the user area while at the same time a person enters the sanitary area; and

terminate the first sanitary remind signal when use of the cleaning agent dispenser is detected after the second point in time of said successive detection of a person leaving the user are and a person entering the sanitary area.

21. A system according to claim 19 or 20, wherein the processor circuitry is further configured to

determine whether the cleaning agent dispenser is used within a predetermined sanitary-period following the second point in time based on inputs from the dispenser use sensor; and

22. A system according to any one of the claims 19 to 21 , wherein the cleaning agent dispenser holds the dispenser use sensor.

23. A system according to any one of the claims 15 to 22, wherein the one or more motion sensors comprise

a first motion sensor configured to detect whether a person is in the user area, and a second motion sensor configured to detect whether a person is in the sanitary area.

24. A system according to any one of the claims 15 to 22, wherein the one or more motion sensors comprise

a first motion sensor configured to detect whether a person is in a combined area comprising the user area and the sanitary area, and

a second motion sensor configured to detect whether a person is in the sanitary area.

25. A system according to claim 24, wherein the processing circuitry is configured to determine when a person enters and leaves the user area based on inputs from both the first and second motion sensors, and to determine when a person enters and leaves the sanitary area based on inputs from the second motion sensor.

26. A system according to any one of the claims 15 to 25, wherein the sanitary area is adjacent to the user area.

27. A cleaning agent dispenser for enhancing a person's hand hygiene, said cleaning agent dispenser comprising a motion detection system comprising:

one or more motion sensors configured to detect whether a person is in a first area, and further configured to detect whether a person is in a second area;

wherein the first area is separate from the second area.

28. A cleaning agent dispenser according to claim 27, wherein the one or more motion sensors comprise

a first motion sensor configured to detect whether a person is in the first area, and a second motion sensor configured to detect whether a person is in the second area.

29. A cleaning agent dispenser according to claim 27, wherein the one or more motion sensors comprise

a first motion sensor configured to detect whether a person is in a combined area comprising the first area and the second area, and

a second motion sensor configured to detect whether a person is in the second area.

30. A cleaning agent dispenser according to any one of the claims 27 to 29, wherein the motion detection system comprises processing circuitry configured to determine when a person enters the first area and when a person enters the second area based on inputs from said one or more motion sensors.

31. A cleaning agent dispenser according to claims 29 and 30, wherein the processing circuitry is configured to determine when a person enters and leaves the first area based on inputs from both the first and second motion sensors, and to determine when a person enters and leaves the second area based on inputs from the second motion sensor.

32. A cleaning agent dispenser according to any one of the claims 27 to 31 , wherein the cleaning agent dispenser holds a dispenser use sensor for detecting use of the cleaning agent dispenser.

33. A cleaning agent dispenser according to claim 32 and claim 30 or 31 , wherein the processor circuitry is further configured to

determine whether the cleaning agent dispenser is used based on inputs from the dispenser use sensor.