KR20050019878A - Method and system for communicating wirelessly between devices by means of an attachable transceiver - Google Patents

Abstract

The present invention relates to a method and system 200 for wirelessly communicating between devices. Wireless communication can be a very suitable way to interconnect adjacent devices, such as devices located in a home. However, it may not be desirable to mount all devices into a wireless transceiver. Moreover, the end user should be able to connect the devices in an easy and common way. The present invention addresses these issues by means of wireless communication keys 250, 260, 270. This is a key-like object with a transceiver. The key can be attached to devices 220, 230, 240 equipped with a wireless connection. The key will have to be powered by the device to which it is attached, which can then establish wireless connections 280 and 282 to other devices. The other device is determined by the key used. The key may be associated with a fixed endpoint device 210 and may be permanently mounted to the transceiver 212. Alternatively, the key can be associated with a second key attached to another device.

Description

Method and system for communicating wirelessly between devices by means of an attachable transceiver

The present invention relates to a method for wirelessly communicating between a first device and a second device.

The invention also relates to a system arranged for wirelessly communicating between a first device and a second device.

There may be situations where devices in different adjacent locations, eg, different rooms of the home, need to be connected. In many cases, for example, considering a longer time period, generally one device communicates only once during a very short portion of a well-defined period of time, for example, only one piece of measurement data, Since it requires a connection to another device, there is no need for a permanent connection between the devices. Permanent connection may also be undesirable from the user's point of view of the device, which may want to have explicit control and visual feedback as to when a connection between the devices can be established. There is a need for a convenient and cost-effective way to temporarily connect devices. One way to accomplish this is to use wireless communication, for example by a radio interface using radio frequency (RF) transceivers. Given the situation in which several different devices all have a system that requires a connection to one fixed endpoint device, it is understood to construct this endpoint device with a transceiver for wireless communication. However, it may not be desirable to form a group of several different devices with each of the aforementioned transceivers. One reason for this is the associated costs of such a transceiver, especially when the cost is high compared to the overall cost of the device. In addition, the number of individual devices that may require a transceiver will play a role here. Another reason for not including transceivers in all devices may be the result of system configuration and device connection setup complexity for end users of the system. In particular, for wired and wireless networks of devices, the problems in this field are well known and often require the help of experts in this field to be solved. Again, considering a system with one fixed endpoint device and often a group of devices that require a connection to the endpoint device, it would be very difficult for the end user to properly configure the devices for the connections to the required endpoint device. Can be. This can be particularly difficult if the system has long been purchased, assembled, and has new devices added to an already working system. In addition, device connection establishment issues occur whenever a connection between devices is needed, for example where a user is required to specify the use of a particular endpoint device that needs to be connected. Such device assignments can be very cumbersome for the user. In other cases, it may also require specific means for user interaction, such as, for example, a screen and buttons that are not needed for a particular device.

1 shows, in a schematic manner, the most important parts of an embodiment of a wireless communication key in use in a method and system according to the invention;

2 shows, in a schematic manner, the most important parts of a first embodiment of a system using a fixed endpoint device according to the invention;

3 shows in a schematic manner the most important parts of a personal health coach comprising a second embodiment of a system using a fixed endpoint device according to the invention;

4 shows, in a schematic manner, the most important parts of a third embodiment of a system using a pair of wireless communication keys in accordance with the present invention;

5 shows in a schematic manner the most important parts of a remote video camera system including a fourth embodiment of a system using a pair of wireless communication keys in accordance with the present invention;

6 shows in a schematic manner a first embodiment of a method of using a fixed endpoint device according to the invention;

7 shows in a schematic manner a second embodiment of a method of using a pair of wireless communication keys according to the invention;

It is therefore an object of the present invention to provide a method for wirelessly communicating between a first device and a second device, wherein it is not necessary for both devices to be configured to include a transceiver, and the corresponding wireless connection is a It can be easily and conveniently made by general users.

According to a first aspect of the present invention, a method provides a first step of providing a wireless communication key comprising a first transceiver designed to communicate wirelessly with a second transceiver contained within a second device, the wireless communication key at the first device. And a third step for utilizing the attached wireless communication key to establish wireless communication between the first device and the second device. Here, only the second device is configured to include a transceiver, and the present invention introduces the concept of a wireless communication key, which is often referred to herein simply as a key. Wireless communication keys are relatively small individual physical objects equipped with transceivers for wireless communication. The transceiver covers a transmission range suitable for the intended application of that key. In the above situation where a connection to a fixed endpoint device is required, the key is assigned to the endpoint device, which implies that the transceiver of the key will always communicate with the transceiver contained within the endpoint device. By operatively attaching the key to the device needed to communicate with the endpoint device, a wireless connection between the two devices can be established. Operatively attaching the key to the device can be implemented in various ways, for example, by inserting the key into a particular slot or socket available on the device for that purpose. The key does not need to include a power source, for example a battery, to operate the transceiver in that key. Instead, the power required to operate the transceiver will have to be supplied by the device to which the key is attached.

In general, only one wireless communication key need not be assigned to a given endpoint device. Instead, multiple keys can be assigned to the same endpoint device and used at the same time or at different times. Such a setup allows systems, for example endpoint devices, to act as a base station, for example for data storage, and allows a keyed device to act as sensors. In the case of multiple keys, it may be advantageous if the key comprises a unique identification, and this identification can be communicated wirelessly to the endpoint device to which the key is assigned, and also accessible by the attached device. . By identification, it is possible to uniquely identify a particular key and to distinguish that key from other such keys being used. The identification contained in the key may be used by the system for the purpose of identification and / or authentication of a known user or owner of the key. One example of this may be the association of data communicated over a particular key with a person known to the system as the owner of the key or the current user.

According to a second aspect of the present invention, the method provides a first wireless communication key and a second wireless communication key,

Each key comprising a transceiver designed for wirelessly communicating with a transceiver contained in another key;

A second step of operatively attaching a first wireless communication key to a first device and operatively attaching a second wireless communication key to a second device,

And a third step for the first device and the second device utilizing respective attached wireless communication keys to establish wireless communication between the first device and the second device. Here, neither device is configured to include a transceiver. In addition, in the absence of a fixed endpoint device, it may still be desirable to be able to have a wireless connection between two devices that each do not have their own transceiver. For use in such a situation, the present invention introduces a pair of wireless communication keys. Two keys forming a pair are assigned to each other, which implies that the two keys will always communicate with each other. By operatively attaching each of the two keys to each device, a wireless connection between the two devices is established.

Multiple pairs of wireless communication keys can be used simultaneously without interfering with each other. In order to know which keys form a pair, the key pairs must be made distinguishable from one another, for example by using different colors for their form, labeling of keys, or for different key pairs.

Within the context of the present invention, for an endpoint device as a second device, when a single wireless communication key is attached to the first device, or in the case of a pair of keys, both keys are attached to respective devices, the first The device can only communicate with the second device. As a result, the presence (or absence) of such keys provides clear user control and feedback as to which devices can communicate wirelessly at any particular moment in time. This applies not only to maintain the establishment of wireless communication by operatively attaching wireless communication keys, but also to the user terminating such a connection by removing the key from the device to which the key was previously attached.

In a first embodiment, a system in accordance with the present invention comprises a wireless communication key comprising a first transceiver designed to communicate wirelessly with a second transceiver included in a second device, operatively operating a wireless communication key at the first device. And first means for attaching, second means for the first device utilizing the attached wireless communication key to establish wireless communication between the first device and the second device. As such, this system is particularly suitable for personal health coaches.

In a second embodiment, a system according to the present invention is a first radio comprising a first radio communication key and a second radio communication key, each of the keys including a transceiver designed for radio communication with a transceiver contained in another key. A first means for operatively attaching a communication key and a second wireless communication key to the first device, a second means for operatively attaching a second wireless communication key to the second device, and a first And third means for the first device and the second device utilizing respective attached wireless communication keys to establish wireless communication between the device and the second device. As such, this system is particularly suitable for remote video camera systems.

The invention will be more apparent and described with reference to the drawings.

1 schematically shows the most important parts of an embodiment of a wireless communication key used in the method and system according to the invention. The wireless communication key 100 includes an RF transceiver 110. In this embodiment, the antenna 140 forms an integral part of the transceiver 110. In other embodiments, antenna 140 and transceiver 110 may be separate portions. The transceiver 110 provides a wireless connection between itself and the second transceiver (not shown in FIG. 1). Such a wireless connection may be established by using various other ways, for example, an air interface or an optical interface such as, for example, infrared (IR). The use of the optical interface works well with short range and line of sight wireless connections. However, in most situations the use of a wireless interface will be more suitable or required. As already indicated, this embodiment uses a wireless interface such as IEEE 802.11, HomeRF, or ZigBee, where well known wireless local area network (WLAN) technology is used. For relatively short range wireless connections, wireless personal area network (WPAN) technology such as, for example, Bluetooth may also be used. Also, for security and privacy reasons, wireless communication can be encrypted.

In the wireless communication key 100, the transceiver 100 is connected to the storage device 120 via an interface 150. Among other things, the storage device 120 may include transceiver configuration information related to the establishment of a wireless connection to the key 100, which has information about the assignment of the key 100 with the endpoint device or the second key. May be included (both not shown in FIG. 1). With reference to the above mentioned wireless network technologies, such assignment may be via the manner of the media access control (MAC) address of the associated second transceiver from the endpoint device or the second key.

The wireless communication key 100 includes a connector 130 for operatively attaching the key 100 to a device that requires a key for communication of the device (not shown in FIG. 1). Connector 130 may be implemented by a dedicated connector, specifically designed for use with a key. However, the connector 130 may also be based on well known connection technology, such as, for example, an RS-232 serial connector, a USB connector, or a PC-card connector. The advantages of using an RS-232 class of connectors would be that such connectors are relatively easy and inexpensive. However, these connectors usually do not provide certain power supply connections that may be required to power the key. Power supply connections are standard for more expensive USB and PC-card connectors. Aside from using these connector types, other means for operatively attaching a key to the device can be used. One example may be the use of a conductive hook or loop fastener between the device and the key. Connector 130 provides external interface 160. Within the key 100, the connector 130 also provides an interface 170 to the transceiver 110 and an interface 180 to the storage device 120. The external interface 160 can be used to power the key 100. Moreover, the interface 160 is used for the exchange of data between the key 100 and the device to which the key 100 is attached. Such data includes data transmitted or data received by transceiver 110 using interface 170. Interfaces 160 and 180 provide external access to storage device 120. This external access during the production of the key 100 and thereafter also via the interfaces 160 and 180 may cause the storage device 120 to configure the key 100 with respect to assignment to a fixed endpoint device or second key. Can be used for placement of transceiver configuration information. Referring again to the aforementioned wireless network technologies, this is via the manner of the media access control (MAC) address of the associated second transceiver.

The storage device 120 also includes a unique identification of the wireless communication key 100. This identification may be communicated over a wireless connection via interface 150 and transceiver 110 and may be used to uniquely identify this particular key 100 in the presence of other such keys. Through interfaces 160 and 180, this identification can also be accessed by the device to which the key 100 is attached. Similar to the placement of transceiver configuration information in the storage device 120 mentioned above, the same interfaces 160 and 180 can also be used to place a unique identification of the key 100 in the storage device 120. .

Except for the parts shown for the wireless configuration key 100 in FIG. 1, and also in the situation where the key was not used for communication at the time and not attached to the device, it may have an added value for the user of such a key. It is possible to be. With a limited local power source, such as a small battery, not used to operate the transceiver 110, the key 100 may also include a digital clock, for example, showing the time to the user. Combining the storage device 120 with visual and / or audio signaling means, such a key may also be useful for creating reminders to the user. The storage device 120 can also be used to store data received from the device to which the key 100 is attached or data received via the transceiver 110 during a wireless connection. After a few moments in time, such data may also be made available to other devices to which the key 100 is attached, or may be used for other purposes. In addition, buffering of data transmitted in the storage device 120 may be a solution to situations where, for example, wireless communication is temporarily unavailable because the second device is temporarily out of range for the transmitter 110. have.

Figure 2 shows in schematic manner the most important parts of a first embodiment of a system using a fixed endpoint device according to the invention. System 200 includes a fixed endpoint device 210. This endpoint device 210 includes a transceiver 212 and a control unit 214 for operating the transceiver 212, and may also include other portions of the endpoint device 210. In addition to the endpoint device 210, the system 200 further includes all of the devices 220, 230, and 240 suitable for operating with the wireless communication key. In particular, each of the devices 220, 230, and 240 includes a respective control unit 224, 234, and 244 for operating the attached key. System 200 also includes keys 250, 260, and 270, where each of these keys includes respective transceivers 252, 262, and 272. The keys 250, 260, and 270 are all assigned to the endpoint device 210, which is an endpoint where each of the transceivers 252, 262, and 272, including the respective keys, provides that key is attached to the device. It implies that a wireless connection with transceiver 212 of device 210 may be established.

In system 200, wireless communication key 250 is attached to device 220 by connection 256. Thus, it is possible for the control unit 224 of the device 220 to operate the key 250, in particular the transceiver 252, and for this purpose an endpoint device (using the transceiver 212 and the control unit 214). It is possible to establish a wireless connection with 210. In a very similar manner, device 230 may activate key 260 for communication with device 210 over wireless connection 282. On the other hand, device 240 is not attached to any key and thus does not have a wireless connection with endpoint device 210. Moreover, the key 270 is not attached to the device of the system 200.

Figure 3 shows in a schematic manner the most important parts of a personal health coach comprising a second embodiment of a system using a fixed endpoint device according to the invention. Personal health coaches are systems for the average healthy person who are interested in maintaining and improving physical condition. For that purpose, the personal health coach informs the user about his current state of health and also advises the user on nutrition and fitness activities to be done. To enable this, the personal health coach receives the results of various physical measurements pertaining to the user such as body temperature, weight, pulse rate, blood pressure and activities performed. Based on these results, in particular the trends observed in these results, a personal health coach is generally used in a home setting where one or more people of a family member can use it.

An individual health coach 300 that includes a base station 310 and various measurement devices 320, 330, 340, 350, and 360 is shown in FIG. 3. The base station 310 constitutes the main component of the personal health coach 300. The base station 310 shown here is a knowledge base including a processing unit 311, a display device 312, a wireless transceiver 313, a database 314 of body measurement data, and rules for processing and analyzing body measurement data ( knowledge base). Among other things, the processing unit 311 maintains the database 314 and uses the knowledge base 315. Moreover, the processing unit 311 informs or advises the user about his or her state of health via the display device 312. According to the present invention, the base station 310 includes a fixed endpoint device permanently mounted with a transceiver 313. Although not shown in FIG. 3, the connection of the base station 310 to a home network such as, for example, Ethernet or IEEE 1394 is very possible in a typical home setup. Through the network, the base station 310 may also provide the user with information on a display device connected to the network, such as, for example, a TV-set. In this way, the user of the personal health coach 300 no longer depends on the display device 311 for his information. The user may consider placing the base station 310 at a location outside the viewing distance within his home, such as a cupboard, cellar, or attic, for example.

Body measurement data for the database 314 may be supplied by the measurement devices 320, 330, 340, 350, and 360. Device 320 includes a pair of scales for measuring weight, device 330 includes a thermometer for measuring body temperature, device 340 includes a blood pressure monitor, and device 350 includes a pulse monitor And the device 360 includes a set of activity sensors for measuring activities of the body. 3 shows these devices only in a symbolic manner, emphasis is instead placed on illustrating the principles of the invention. Although shown together in FIG. 3, the devices 320, 330, 340, 350, and 360 are devices in and around the home, for example, devices 320 located in a bathroom and devices 340 located in a training room, and 350 may be distributed, while device 330 has no specific location. The device may also be worn by the user for a length of time to be considered, which may be the case here for device 360. According to the present invention, each of the devices 320, 330, 340, 350, and 360 does not have a transceiver on its own, but instead includes a device configured to use a wireless communication key. For devices 320, 330, 340, 350, and 360, a key is attached through connectors 321, 331, 341, 351, and 361, respectively. This is shown in FIG. 3 only in a symbolic manner.

Moreover, devices 320, 330, 340, 350, and 360 correspond to well known measurement devices to which support for a wireless communication key is added. In this way, the user can easily become familiar with the measurement devices and have a clear picture of what measurement data is entered into the personal health coach 300. Also in this manner, the manufacturer of such devices can start with an already existing device and add support for the key with minimal effort and cost.

Personal health coach 300 further includes wireless communication keys 370, 371, and 372. The keys 370, 371, and 372 are all assigned to the base station 310, which each establishes wireless communication with the transceiver 313 of the base station 310, providing that the keys are attached to the appropriate device. Imply that it can. Each of the keys 370, 371, and 372 stores a unique identification as already described above. Through identification, each of the keys 370, 371, and 372 is associated with and issued to each user of the personal health coaching.

 Whenever a user of personal health coaching wants to add body measurement data, the user attaches his height to the measurement device from which the data is provided. In FIG. 3, the first user sends his key 370 through the connector 321 to obtain his or her weight measurement wirelessly communicated to the base station 310 to the storage device in the database 314 via the connection 380. Attach to device 320. The second user connects his key 371 via the connector 341 to the device 341 to obtain his blood pressure measurement, which is also wirelessly communicated via connection 381 to the storage device in the database 314. 340). The third user currently does not attach his key 372 to any devices. The devices 230, 250, and 260 do not have any keys attached to it, and therefore do not have a wireless connection with the base station 310 at this point.

In the personal health coach 300, the measurement devices 320, 330, 340, 350, and 360 exhibit different wireless communication features. Devices 320, 330, and 340 in principle only perform a single measurement. Thus, a wireless connection with a base station 310 for communicating a single, long lasting, measurement may be sufficient. On the other hand, devices 350 and 360 perform more or less continuous measurements and require wireless communication with base station 310 with more or less periodic or possibly continuous characteristics.

Figure 4 shows in a schematic manner the most important parts of a third embodiment of a system using a pair of wireless communication keys in accordance with the present invention. System 400 includes a pair of wireless communication keys, namely key 430 and key 440. Respective keys 430 and 440 include respective transceivers 432 and 442. The keys 430 and 440 are assigned to each other, which implies that the transceivers 432 and 442 included in the respective keys can establish a wireless connection with each other, providing that the respective keys are attached to the device. do. In addition to keys 430 and 440, system 400 includes devices 410 and 420 suitable for operating with a key. In particular, both devices 410 and 420 include respective control units 414 and 424 to operate the attached key.

In system 400, wireless communication key 430 is attached to device 410 by connection 436. Similarly, key 440 is assigned to device 420 by connection 446. Thus, the control units 414 and 424 of each device 410 and 420 operate the respective keys 430 and 440, in particular the transceivers 432 and 442, in this way the devices 410 and 420. Establish a wireless connection 450).

Figure 5 shows in a schematic manner the most important parts of a remote video camera system including a fourth embodiment of a system using a pair of wireless communication keys in accordance with the present invention. Remote video camera systems can be used in and around the house, for example, to keep an eye on the baby while the baby sleeps in the room or for surveillance purposes for the surveillance of the front door or entrance.

A remote video camera system 500 including devices 510, 520, 530, and 540 is shown in FIG. 5 and extends to home locations 501-504. Location 501 may be a bathroom that includes a first TV-set 510. The location 502 can be a front door location where the first video camera 520 is positioned to monitor the front door. Location 503 may be a living room in which a second TV-set is located but may be a kitchen. Location 504 may be a bedroom, which may be a room for a baby with a second video camera 540 installed. When video camera 520 or 540 is coupled with TV-set 510 or 530, video images generated by the camera can be made to be viewed in the TV-set. According to the present invention, each of the devices 510, 520, 530, and 540 does not have a transceiver on its own and instead comprises a device configured to use a wireless communication key. In devices 510, 520, 530, and 540, a key will be attached via connectors 511, 521, 531, and 541. This is shown in FIG. 5 in a symbolic manner.

The remote video camera system 500 includes a pair of wireless communication keys, namely a key 550 and a key 560. The keys 550 and 560 are assigned to each other, which implies that these keys can establish a wireless connection with each other, providing that the two keys are attached to a suitable device.

FIG. 5 reflects a situation where a user of a remote video camera system 500, located in the living room 503, wants to keep an eye on, for example, a child sleeping in the bedroom 504. The user may be a parent or carer for the child at that time. To achieve surveillance of the child, the user attaches a wireless communication key 550 to the TV-set 530 via the connector 531 and wireless communication key 560 to the video camera 540 via the connector 541. Attach). As a result, a wireless connection 570 is established between the camera 540 and the TV-set 530, which will be used to communicate video images from the camera 540 to the TV-set 530 for viewing by the user. Can be. Because of the continuous nature of the video images, communication will also be easy.

Although not shown directly in FIG. 5, the remote video camera system 500 also provides various other possibilities. For example, when the user decides to move from the living room 503 to the bedroom 501, the user simply detaches the wireless connection key 550 from the TV-set 530 and moves the key 550 into the room. Take and attach a key 550 to the TV-set 510 via a connection 511. At that point in time, a wireless connection between the video camera 540 and the TV-set 510 is established, through which the video images from the camera 540 are communicated to the TV-set for viewing by the user. Can be. Another possibly raised issue relates to the movement of the wireless communication key 560 from the camera 540 to the camera 520 located near the front door position 502 in the bedroom 504. As shown in FIG. 5, assuming that the key 550 is still attached to the TV-set 530, a wireless connection between the camera 520 and the TV-set can be established, through which the camera is connected. Video images from 520 may only be communicated to TV-set 530 for viewing by a user.

6 shows in a schematic manner a first embodiment of a method of using a fixed endpoint device according to the invention. Through review of FIG. 6, other references may be made with reference to FIG. 2 by reference numerals of some of FIG. 2. The present invention begins in a situation where a wireless connection between the first device 220 and the second device 210 is desired.

In a first step 610 a wireless communication key 250 is provided. This key includes a second transceiver 252 designed for wirelessly communicating with a second transceiver 212 contained within a second device 210. This key 250 can be obtained with the second device, for example at the time of purchase. The key 250 may be obtained individually or maybe obtained with the first device 220 and then assigned to the device 210.

In a second step 620, the wireless communication key 250 is operably attached to the first device 220, ready for use by the first device 220.

In a third and final step 630, the first device 220 uses the wireless communication key 350 to establish a wireless connection 280 between the first device 220 and the second device 210. This reflects the situation as shown in FIG.

7 shows in a schematic manner a second embodiment of a method of using a pair of wireless communication keys in accordance with the present invention. Through review of FIG. 7, other references may be made with reference to FIG. 4 by reference numerals of some of FIG. 4. The present invention begins in a situation where a wireless connection between the first device 430 and the second device 440 is desired.

In a first step 710 a pair of wireless communication keys are provided, namely a first key 430 and a second key 440. Each of these pairs of keys includes respective transceivers 432 and 442 designed for wireless communication with a transceiver contained in another key. These pairs of keys can be obtained, for example, at the time of purchase, with both or with devices 430 and 440. The pair of keys can be obtained separately. Individual keys 430 and 440 of a pair of keys can be obtained separately and then assigned to each other.

In a second step 720, wireless communication keys 430 and 440 are operably attached to devices 410 and 420, ready for use by devices 410 and 420.

In a third and final step 730, devices 410 and 420 use respective wireless communication keys 430 and 440 to establish a wireless connection 450 between devices 410 and 420. This reflects the situation as shown in FIG.

Apart from the above-mentioned embodiments, it is clear that the present invention may be beneficial by way of many other embodiments. The first example is for using a TV-set as a fixed endpoint device with a key assigned to the TV-set with content source devices such as a video recorder, set top box, or DVD player mounted for use with the key. Related. The second example relates to the use of a portable audio device mounted for use with a key. With such a second audio device adjacent, a pair of keys can be used to wirelessly connect the two audio devices, for example to exchange music. The presence (or absence) of such keys provides reliable user control and feedback so that audio devices can communicate wirelessly at certain moments in time. A third example relates to the use of a pair of keys for wirelessly connecting a digital camera with a printer device. According to the above, it will be clear that the present invention provides a very convenient and flexible way of communicating wirelessly between devices.

The present invention can be summarized as follows.

The present invention relates to a method and system for wirelessly communicating between devices. Wireless communication can be a very suitable way to interconnect short-range devices, such as devices located in a home. However, it is not desirable to mount a wireless transceiver in every device. Moreover, the end user must connect the devices in an easy and convenient way. The present invention addresses these issues by means of wireless keys 250, 260 and 270. This is a key-like object with a transceiver. The key may be attached to devices 220, 230, 240 that require a wireless connection. The key may need to be powered by a device to which it is attached and capable of establishing wireless connections 280 and 282 with other devices. The other device can be determined by the key used. The key may be associated with a fixed endpoint device 210 that is permanently mounted with the transceiver 212. Alternatively, the key can be associated with a second key attached to another device.

Claims (7)

A method for wirelessly communicating between a first device and a second device, the method comprising: A first step of providing a wireless communication key comprising a first transceiver designed to communicate wirelessly with a second transceiver included in the second device, A second step of operatively attaching the wireless communication key to the first device, A third step for the first device utilizing the attached wireless communication key to establish wireless communication between the first device and the second device. Communication method. The wireless communication key of claim 1, wherein the wireless communication key comprises a unique identification, and wherein the third step comprises a sub-step of communicating this identification to the first device and the second device for identification and / or authentication. Characterized in that, the method of wireless communication between the first device and the second device. A method for wirelessly communicating between a first device and a second device, the method comprising: A first step of providing a first wireless communication key and a second wireless communication key, Wherein each of said keys comprises a transceiver designed for wirelessly communicating with said transceiver contained in another key; A second step of operatively attaching the first wireless communication key to the first device and operatively attaching the second wireless communication key to the second device, And a third step for the first device and the second device utilizing the respective attached wireless communication keys to establish wireless communication between the first device and the second device. A method of wireless communication between a first device and a second device. A system arranged for wirelessly communicating between a first device and a second device, the system comprising: A wireless communication key comprising a first transceiver designed to wirelessly communicate with a second transceiver included in the second device, First means for operatively attaching the wireless communication key to the first device, And second means for the first device utilizing the attached wireless communication key to establish wireless communication between the first device and the second device. Wireless communication system. A personal health coach, comprising the system according to claim 4. A system arranged for wirelessly communicating between a first device and a second device, the system comprising: A first wireless communication key and a second wireless communication key, each of the keys comprising a transceiver designed to wirelessly communicate with the transceiver contained in another key; First means for operatively attaching the first wireless communication key to the first device, Second means for operatively attaching the second wireless communication key to the second device, And third means for the first device and the second device utilizing the respective attached wireless communication keys to establish wireless communication between the first device and the second device. A system arranged for wireless communication between a first device and a second device. A remote video camera system comprising the system according to claim 6.