DE102017113647A1 - Device for retrofitting a motor vehicle for operation in a rental car or car sharing system - Google Patents

Abstract

Device (4), in particular for operating a motor vehicle (1) in a rental car or car sharing system, wherein the motor vehicle (1) has an authorization system (2) with at least one associated identification medium (3), wherein the identification medium (3) and the authorization system (2) is set up to communicate with each other via an identification radio link (F1) in order to check a user's authorization to use the motor vehicle (1), the device (4) comprising: - a receiving station (5) for receiving the identification medium (3) - an actuator (6) for initiating an identification radio connection (F1) with the identification medium (3), - a receiver (11), with which radio communication (F2, F3) taking place within the framework of the identification radio connection (F1) Identification medium (3) and the authorization system (2) can be received, - a control unit (7) which is adapted to the radio communication ( F2, F3) and to determine whether an identification radio connection (F1) is taking place or not, and - a feedback module (8) for giving feedback to a user.

Description

The invention relates to a device for retrofitting a motor vehicle for operation in a car rental or car sharing system. In car rental or car sharing systems, it is regularly required that identification media for checking the authorization of a user for use of the motor vehicle (for example, keys, radio keys, etc.) are stored in the vicinity of the motor vehicle, on the motor vehicle or even in the motor vehicle after the return of the motor vehicle by a user a next user can access these identification media to use them.

It is widespread that receiving points for receiving the identification medium are provided on the motor vehicle. Such receiving sites may be, for example, storage compartments in which the identification medium is to be stored.

Such receiving points or receiving compartments may be part of a device with which a motor vehicle can be equipped for operation in a rental car or car sharing system. The term "equipment" is to be understood in particular as the retrofitting for a rental car or car sharing operation. Such retrofit devices make it possible to retroactively set up motor vehicles that are not intended by the motor vehicle manufacturer for use in a rental car or car sharing system for operation in a rental car or car sharing system.

Conventional identification media for checking the authorization of a user to use a motor vehicle often have buttons which can be pressed by a user in order to open or close a motor vehicle or optionally also to close only the trunk of a motor vehicle. Such identification media communicate with the authorization system of the motor vehicle via radio.

In addition, identification media are known that a user does not have to operate so that the authorization to use the motor vehicle is checked. Such identification media are known, for example, under the terms Keyless Go and Keyless Entry. In such identification media, a radio link is established between the identification medium and the authorization system of a motor vehicle, with which the authorization of the user to use the motor vehicle is checked by radio. This happens as soon as the user performs an action with which he wants to initiate a use of the motor vehicle. Such an action is, for example, when the user approaches the motor vehicle, pulls on the door handle of the motor vehicle or actuates a start button for starting a drive of the motor vehicle. Such identification media usually additionally have a button, via which a user can initiate the identification radio connection in a targeted manner.

It is known to use the functions of the identification medium in order to release or reopen or close the motor vehicle within the scope of a rental car or car sharing system. For this purpose, for example, the DE 10 2005 059 061 B4 a box in which the identification medium of the motor vehicle can be inserted. The box has an actuator with which buttons of the key can be actuated to automatically open or close the motor vehicle targeted. In the operation of such a motor vehicle in a rental car or car sharing system, however, it is regularly problematic if users do not properly deposit the identification medium within the motor vehicle, for example, if users do not insert the identification medium properly in a designated receptacle or at a designated receiving point , Then a corresponding device for operating a motor vehicle in a rental car or car sharing system can not access the identification medium as intended. Another problem could be that a subsequent user finds the identification medium is not or only difficult and therefore a smooth operation of the car rental or car sharing system is not possible.

Against this background, a particularly advantageous device for operating a motor vehicle in a rental car or car sharing system is described here, which solves in particular the problem described here of incorrect storage of the identification medium. Also to be described here is a particularly advantageous method for operating a motor vehicle in a rental car or car sharing system, which also solves this problem accordingly.

The invention is described by a device according to the features of claim 1 and by a method according to the features of claim 8. Further advantageous embodiments of the device and the method are given in the dependent formulated claims. It should be noted that the invention is not limited to the claims and in connection with the description further advantageous embodiments are shown.

• - eine Aufnahmestelle zur Aufnahme des Identifikationsmediums,
• - einen Aktor zur Einleitung einer Identifikationsfunkverbindung mit dem Identifikationsmedium,
• - einen Empfänger, mit welchem im Rahmen der Identifikationsfunkverbindung stattfindende Funkkommunikation zwischen dem Identifikationsmedium und dem Berechtigungssystem empfangen werden kann,
• - ein Steuergerät, welches dazu eingerichtet ist, die Funkkommunikation auszuwerten und festzustellen, ob eine Identifikationsfunkverbindung stattfindet oder nicht, und
• - ein Rückmeldungsmodul zur Abgabe einer Rückmeldung an einen Benutzer.

Described here is a device for operating a motor vehicle in one A rental car or car sharing system, wherein the motor vehicle has an authorization system with at least one associated identification medium, wherein the identification medium and the authorization system are adapted to communicate with each other via an identification radio link to check a user's authorization to use the motor vehicle, wherein the Device comprising:

• a receiving station for receiving the identification medium,
• an actuator for initiating an identification radio connection with the identification medium,
• a receiver with which radio communication taking place within the framework of the identification radio connection can be received between the identification medium and the authorization system,
• a control device which is adapted to evaluate the radio communication and to determine whether an identification radio connection takes place or not, and
• a feedback module for providing feedback to a user.

The motor vehicle can be any desired motor vehicle and is in particular a passenger vehicle. The motor vehicle is set up for operation in a rental car or car sharing system. The phrase "rental car or car sharing systems" includes all conceivable applications in which an identification medium is stored at a receiving location on a motor vehicle, in particular to allow easy access to the identification medium. The device is characterized in particular by the fact that it is unproblematically adaptable to very different types of motor vehicle from different motor vehicle manufacturers and can be operated without problems with such various motor vehicles.

The authorization system of the motor vehicle preferably comprises all components of the motor vehicle which are active for checking the authorization of the user for using the motor vehicle and for initiating the use of the motor vehicle. These include, for example, an ignition lock, a door lock, a door handle on which can be pulled to open the motor vehicle, start buttons with which the drive of the motor vehicle can be started by a user, but also corresponding control modules or corresponding radio modules (called authorization radio module here ) with which the identification medium of the motor vehicle can communicate in order to check the authorization of the user.

The term "identification medium" and "authorization system" here include both identification media and authorization systems that establish identification radio connections as soon as the user actuates a button on the identification medium. Also included here are so-called keyless entry systems or keyless entry systems, in which the identification radio connection between the identification medium and the authorization system for checking the authorization of the user to use the motor vehicle is automatically initiated. This is done (as described above) when the user initiates a corresponding action, such as actuating a start button of the motor vehicle or pulling on a door handle of the motor vehicle. Identification media with such a Keyless Go or Keyless Entry functionality usually additionally have at least one button, via which a manual operation and initiation of an identification radio connection is possible.

The device preferably comprises a receiving location for receiving the identification medium. Preferably, the receiving location is a receiving compartment in which the identification medium is deposited after termination of a period of use (in particular a rental period) of the motor vehicle. The receptacle can be arranged directly on or in a housing of the device. Accordingly, the term "actuator" here also includes any means or any component which allows an action on the identification medium or a button of the identification medium to initiate an identification radio connection. The receiver of the device makes it possible to detect an ongoing radio communication in the context of the identification radio connection. The receiver is in particular a receiver, which is set up to detect radio communication in the frequency range in which the identification radio connection also takes place. Thus, the receiver can receive radio communication, which allows the controller to determine by evaluation whether an identification radio connection is taking place or not. The receiver may have one or more radio antennas.

The control unit preferably comprises at least one processor and an electronic memory in which instructions for the processor are stored. The control unit (in particular processor and memory) are preferably deposited on a circuit board. In particular, instructions are stored with which the control unit is set up to evaluate radio communication that takes place as part of the identification radio connection, and thereby determine whether the identification radio connection is taking place. With that the Identification radio link takes place, for example, here means that a successful identification radio connection takes place, which is adapted to determine a user's authorization to use the motor vehicle. However, it is preferably sufficient to recognize that, starting from the identification medium, radio communication takes place at all to establish that a successful identification radio connection is taking place or can take place. The apparatus described here and the method described below are intended to ensure, in particular, that the initiation of an identification radio connection (by actuating the identification medium or a button on the identification medium with the actuator) is possible. This may possibly already be achieved by detecting radio communication within the framework of the identification radio connection.

With the aid of this controller, the receiver and the actuator, an identification radio connection can be set up on an experimental basis in order to determine whether the establishment of an identification radio connection is possible. This can be used to determine whether the identification medium is suitably accommodated and accordingly an actuator is able to actuate the identification medium or a button on the identification medium. For example, it can be checked whether the identification medium is arranged in a receiving compartment for storing the identification medium on the device. Only in this case is the correct construction of an identification radio connection possible by interaction of the actuator and the identification medium.

Through the interaction of actuator, receiver and identification medium according to the described manner, it becomes possible to provide further means for ensuring correct picking or positioning of the identification medium during the return of the motor vehicle as part of a rental car or car sharing operation without. It also makes it possible to check directly whether the identification medium has been filed correctly. A user of the motor vehicle not only determines after leaving the motor vehicle that the motor vehicle can not be locked. This check can be done before, especially if the user is still sitting in the vehicle and can easily make a correction of the filing of the identification medium. Thus, the device is particularly easy to handle in a car rental or car sharing system.

Therefore, the device also includes a feedback module for providing feedback to a user. This feedback module can be used, in particular, to inform the user that the identification medium has not been stored correctly if no identification radio connection has been established. The user can then make a correction of the storage of the identification medium (positioning, alignment, etc.).

In a particularly advantageous embodiment of the device, the identification medium has at least one button which is provided for actuation by a user to initiate an identification radio link, wherein the actuator comprises at least one control pin, with which an automatic actuation of the at least one button on the identification medium can take place when the identification medium is received at the receiving site.

The receiving point is in this case in particular a receiving box in which the identification medium can be inserted. Typical identification media even have up to two or even three buttons. A button is often used to open the motor vehicle, another button is used to close the motor vehicle. Often, a third button is still provided, which serves only to open the trunk of the motor vehicle when something is to be inserted into the trunk. Accordingly, the actuator may even have a plurality of control pins with which a plurality of (or possibly even all) buttons of the motor vehicle can be actuated.

By the term "automatic operation" is meant in particular an actuation with an actuator, which can be electrically controlled by the control unit.

In particular, for such control pins to hit the buttons of the identification medium accurately, thus enabling the initiation of an identification radio connection, it is important that the identification medium be properly positioned. This means that the actuator in the receptacle should be aligned in particular as intended and the identification medium should not be turned upside down, tilted or received in a similar (wrong) way. This can be checked with the help of the receiver to detect an identification radio connection.

The actuator may, for example, hydraulically, pneumatically, electrically, electromechanically or magnetically. The control of the actuator of the control unit is realized by suitable electronics and by suitable drives. Furthermore, the device is advantageous if the receiver comprises at least one high-frequency receiver which is adapted to receive high-frequency communication.

By radio frequency communication is meant in particular radio communication on the so-called ISM bands.

The device is particularly advantageous if the feedback module uses a security radio module for issuing a feedback to the user, with which a feedback can be given to a mobile terminal of a user.

A security radio module is in particular an antenna, which optionally additionally has electronic components with which radio signals received by the antenna can be processed for the control device of the device. With a security radio module, a secure radio connection can be established to another device, which is not manipulated in particular.

A security radio connection is for example a radio connection to a server of the car rental or car sharing system or a radio connection to a mobile terminal of the user. Optionally, the security radio module may also be configured to establish a security radio connection to a server using the user's mobile terminal as a relay station.

In the context of car rental or car sharing systems, it is common for the user to use a mobile terminal (for example, a mobile phone or tablet) to reserve and open the vehicle. Likewise, the user typically uses the mobile terminal to return the motor vehicle. The message that the motor vehicle is successfully returned is therefore preferably output to the mobile terminal when the identification medium is suitably stored in the motor vehicle. With the described device, it is thus possible to first check whether the identification medium has been stored correctly and, in the event that the identification medium has been filed correctly, to give the user via his mobile terminal a corresponding feedback.

Furthermore, the device is advantageous if the feedback module comprises at least one optical feedback component.

In addition, the device is advantageous if the feedback module comprises at least one acoustic feedback component.

It is also possible that the device comprises both an optical feedback component and an acoustic feedback component. An optical feedback component is, for example, a warning lamp or a warning LED. An acoustic feedback component is, for example, a loudspeaker or another sound-generating element. An optical feedback component can also be a display on which a user can display a corresponding feedback.

In particular, if a correct identification radio connection has not been established and it can therefore be assumed that the identification medium has not been inserted correctly, it may be advantageous to give a feedback very quickly optically and / or acoustically without the user actually being on a mobile device has to look. Therefore, it is advantageous if the device comprises optical feedback components and / or acoustic feedback components. Optical feedback components may include, for example, warning lights that may be lit or, if necessary, flash, if no identification radio connection has been detected. Acoustic feedback components may generate any form of noise to provide feedback to the user.

Particularly advantageous is the use of the device in a motor vehicle for a rental car or car sharing system. However, it is also conceivable that the device is used outside of a rental car or car sharing system, for example, if a user does not want to access the motor vehicle via the normal identification medium, but instead via a mobile phone. Then the device can also be used to make this possible.

1. a) Ablegen des Identifikationsmediums an einer Ablagestelle,
2. b) Einleiten einer Identifikationsfunkverbindung mit dem Identifikationsmedium,
3. c) Überwachen einer im Rahmen der Identifikationsfunkverbindung aus Schritt b) stattfindenden Funkkommunikation zwischen dem Identifikationsmedium und dem Berechtigungssystem,
4. d) Auswerten der Funkkommunikation aus Schritt c) um festzustellen, ob die Identifikationsfunkverbindung stattfindet oder nicht, und
5. e) Abgabe einer Rückmeldung an den Benutzer unter Berücksichtigung des Ergebnisses der Auswertung aus Schritt d).

Also to be described here is a method for operating a motor vehicle in a rental car or car sharing system, wherein the motor vehicle has an authorization system with an associated identification medium, wherein the identification medium and the authorization system are configured to communicate with each other via an identification radio link to a Authorization of a user to test the use of the motor vehicle, comprising the following steps:

1. a) depositing the identification medium at a storage location,
2. b) initiating an identification radio connection with the identification medium,
3. c) monitoring a radio communication between the identification medium and the authorization system taking place as part of the identification radio connection from step b),
4. d) evaluating the radio communication from step c) to determine whether the identification radio connection takes place or not, and
5. e) submitting a feedback to the user taking into account the result of the evaluation from step d).

It should be understood that the particular advantages and design features described above in connection with the device are analogously applicable and transferable to the method described herein. The same applies to the particular advantages and design features of the method described below, which are analogously applicable to the device described above and transferable.

The deposition of the identification medium at the storage location describes, for example, the storage in a designated receptacle of a device described above.

The initiation of the identification radio connection can be done in any way. Particularly preferred is the introduction by pressing this actuator with the help of an actuator and a control pin on a button to initiate the identification radio connection. However, other possibilities for initiating an identification radio connection are also conceivable. The monitoring of the radio communication taking place takes place in particular with a receiver, as has already been described above. The evaluation of the radio communication is done in particular with a control unit, as has already been described above. The evaluation of the radio communication can in particular also be to establish that no radio communication is taking place or has taken place. From this it can be seen that an initiation of the identification radio connection did not take place. Accordingly, it can be considered that an actuator was unable to interact with the identification medium in such a way as to initiate the identification radio connection. From this it can be concluded that the insertion position of the identification medium is probably wrong. The submission of a response to the user is done in particular with a feedback module, as has already been described above.

The method is particularly advantageous if the identification medium has at least one button which is provided for actuation by a user to initiate an identification radio connection, wherein the initiation of the identification radio connection in step b) takes place with at least one control pin with which the at least one button is operated on the identification medium.

It has already been described above that conventional identification media have a plurality of buttons, wherein a button is provided, for example, for opening the motor vehicle, while a further button is provided for closing the motor vehicle. In the context of the initiation of the identification radio connection in step b), it is particularly advantageous if the button for opening the motor vehicle is pressed. For the safe operation of the motor vehicle in a rental car or car sharing system, it is crucial that the device can access the identification medium in such a way that both opening and closing of the motor vehicle is possible. After the return of the motor vehicle by the user, it is necessary that the motor vehicle is closed. When the motor vehicle is released for a new user, it is necessary for the motor vehicle to be opened. Both functions must be guaranteed. However, if a user returns the motor vehicle, it is irritating for him if the device closes the motor vehicle while the user is sitting in the motor vehicle. For the user, the impression could arise to be trapped in the motor vehicle for a short time. Therefore, it is advantageous if, in order to check whether an identification radio connection is correctly initiated or takes place, the button for opening the motor vehicle is to be actuated. This has the decisive advantage that the motor vehicle is not closed and a corresponding impression with the user does not arise. Alternatively, it is also possible that the motor vehicle is first closed and then reopened. Then it is determined on the one hand, whether a closure of the motor vehicle is possible, on the other hand, whether an opening of the motor vehicle is possible. In most cases, however, it will be sufficient if only one of the two functions is possible, because then there is a very high level of certainty that the other function (closing the motor vehicle) is also possible. If a user inserts the identification medium in a receptacle and the opening is possible by means of such an actuator, then it can be assumed that a closure is possible.

The method is particularly advantageous if high-frequency communication is monitored in step c) and high-frequency communication is evaluated in step d). As already explained above, the term "evaluation" here also includes, in particular, the statement that high-frequency communication is taking place and / or has taken place. High-frequency communication corresponds to the definition explained above. As already explained above, the evaluation of the Radio frequency communication are determined whether identification radio connection takes place in the sense intended here.

Furthermore, the method is advantageous if the user is asked with the feedback in step e) to correct a storage position of the identification medium at a storage location, if in step d) no identification radio connection ( F1 ) was detected.

It is particularly advantageous if the feedback comprises an optical and / or acoustic request to correct the storage position of the identification medium at the deposit location.

Such an optical or acoustic feedback is perceived by the user particularly immediately and quickly and can therefore react to it particularly easily.

Furthermore, the method is advantageous if the user is informed with the feedback in step e) that the deposition of the identification medium at the deposit location was successful if an identification radio link was established in step d).

It is particularly advantageous if the feedback that the storage of the identification medium at the storage location was successful is made via a security radio module to a mobile terminal of the user.

At a mobile terminal, a user can receive the feedback that the deposit of the identification medium was successful, particularly advantageous. Usually, the user already uses a mobile terminal (for example, his mobile phone) to return the motor vehicle as part of a rental car or car sharing operation. If he has deposited the identification medium at the depository, he will then immediately see that the filing was successful. He can then leave the motor vehicle and the device can close the motor vehicle by an action of the actuator on the identification medium in the sense described.

It is particularly advantageous if the user receives different feedback, depending on whether it is determined by the described method that the identification medium at the storage location was not stored at all or incorrectly. If the identification medium was not stored at all, the user preferably receives a corresponding hint. If the identification medium was filed incorrectly as well. Then the user can respond to the respective error message particularly targeted.

Whether the identification medium has not been stored at all or has been stored incorrectly can be determined, for example, in the case where the actuator has a control pin described above, by whether or not the control pin presses against a mechanical resistance. If the identification medium is inserted incorrectly (for example, upside down), then the control pin presses against the identification medium and there is an increased resistance. This increased resistance can be determined by the current demand of the actuator. If this is the case and at the same time no identification radio connection can be established, it can be assumed that the identification medium has been stored incorrectly. If the control pin of an actuator extends without resistance, it can be assumed that no identification medium is deposited at the storage location.

• 1: ein Kraftfahrzeug mit einer beschriebenen Vorrichtung und
• 2: ein Ablaufdiagramm des beschriebenen Verfahrens.

The invention and the technical environment will be explained in more detail with reference to FIGS. The figures show preferred embodiments, to which the invention is not limited. It should be noted that the figures and in particular the size ratios shown in the figures are only schematic. Show it:

• 1 : a motor vehicle with a described device and
• 2 a flow chart of the described method.

1 shows the motor vehicle 1 with the authorization system 2 and a described device 4 , The authorization system 2 includes various components that are used to verify the eligibility of a user, the motor vehicle 1 to serve. These include, for example, an authorization radio module 18 , an ignition 19 , a start button 20 , a door handle 21 or a door lock 22 , So there are also components of the authorization system 2 includes, which are used to move from a user to the authorization system 2 access (for example, start button 20 , Authorization radio module 18 or door handle 21 ) as well as components that serve, starting from the authorization system 2 Initiate actions such as the ignition 19 or the door lock 22 ,

The device 4 has a receiving point 5 on, for receiving an identification medium 3 serves. The reception site 5 is designed here as a storage compartment. The device further comprises an actuator 6 on, which on the identification medium 3 can affect an identification radio link F1 build. The identification radio connection F1 may include various identification radio communications; For example, shown here are low frequency communication F2 and a high frequency communication F3 , The identification medium 3 has buttons 9 on which control pins 10 of the actor 6 can press to the identification radio link F1 initiate. The recording location listed as recording here has in particular a shutter 23 and a shutter drive 24 with which the receiving place 5 can be closed to the identification medium 3 in the reception area 5 to protect.

The device 4 also has a receiver 11 on, with which the identification radio connection F1 or low frequency communication F2 and / or high frequency communication F3 can be received. That's what the recipient has 11 a low frequency receiver 12 and / or a radio frequency receiver 13 , The device 4 also has a feedback module 8th which is an optical feedback component 16 and / or an acoustic feedback component 17 may include. The various components described (actuator 6 , Receiver 11 , Feedback module 8th , Security radio module 14 etc.) are connected to a control device in the device 4 connected to the device 4 controls and in which appropriate program routines can be stored. The device 4 also has a security radio module 14 with which a security radio link to a central location 26 (For example, a server for operating the car rental or car sharing system) and / or to a mobile terminal 15 of a user can be established. Here also indicated is that the device 4 a power supply 25 having. In addition, data lines 27 indicated that the individual components of the device 4 connect with each other.

2 shows a flowchart of the described method. Evident are the successive process steps a), b), c), d) and e). In step b) becomes an identification radio connection F1 built, for example, the low-frequency communication F2 and high frequency communication F3 may include. This radio communication is registered in step c), in order then to be evaluated in step d) and to be able to give the correspondingly described feedback to a user in step e).

With the method described, it is particularly easy in the context of a rental car or car sharing system to check whether a user correctly returns an identification medium for identifying a use of the motor vehicle.

LIST OF REFERENCE NUMBERS

1

motor vehicle

2

authorization system

3

identification medium

4

contraption

5

receiving location

6

actuator

7

control unit

8th

Feedback module

9

button

10

control pin

11

receiver

12

Low frequency receiver

13

RF receiver

14

Safety radio module

15

mobile terminal

16

optical feedback component

17

acoustic feedback component

18

Permission radio module

19

ignition

20

start button

21

door handle

22

Locks

23

shutter

24

shutter drive

25

power supply

26

central location

27

data line

F1

Identification radio link

F2

Low frequency communication

F3

RF communications

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102005059061 B4 [0006]

Claims (13)

Device (4), in particular for operating a motor vehicle (1) in a rental car or car sharing system, wherein the motor vehicle (1) has an authorization system (2) with at least one associated identification medium (3), wherein the identification medium (3) and the authorization system (2) is set up to communicate with each other via an identification radio connection (F1) in order to check authorization of a user to use the motor vehicle (1), the device (4) comprising: - A receiving point (5) for receiving the identification medium (3) an actuator (6) for initiating an identification radio connection (F1) with the identification medium (3), a receiver (11) with which radio communication (F2, F3) taking place in the context of the identification radio connection (F1) can be received between the identification medium (3) and the authorization system (2), a control unit (7) which is set up to evaluate the radio communication (F2, F3) and to determine whether an identification radio connection (F1) takes place or not, and - A feedback module (8) for delivering a response to a user. Device (4) according to Claim 1 in that the identification medium (3) comprises at least one button (9) provided for actuation by a user to initiate an identification radio connection (F1), the actuator comprising at least one control pin (10) with which an automatic actuation the at least one button (9) on the identification medium (3) can take place when the identification medium (3) is received at the receiving point (5). Device (1) according to Claim 1 or 2 wherein the receiver (11) comprises at least one radio frequency receiver (13) adapted to receive radio frequency communication (F3). Device (1) according to one of the preceding claims, wherein the feedback module (8) uses a security radio module (14) for delivering a feedback to the user, with which a feedback to a mobile terminal (15) of a user can be delivered. Device (4) according to one of the preceding claims, wherein the feedback module (8) comprises at least one optical feedback component (16). Device (4) according to one of the preceding claims, wherein the feedback module (8) comprises at least one acoustic feedback component (17). Use of a device (4) according to one of the preceding claims in a motor vehicle (1) for a rental car or car sharing operation. Method for operating a motor vehicle (1) in a rental car or car sharing system, wherein the motor vehicle (1) has an authorization system (2) with at least one associated identification medium (3), wherein the identification medium (3) and the authorization system (2) being adapted to communicate with each other via an identification radio connection (F1) in order to check a user's authorization to use the motor vehicle (1), comprising the following steps: a) depositing the identification medium (3) at a receiving location (5), b) introducing an identification radio connection (F1) with the identification medium (3), c) monitoring a radio communication (F2, F3) taking place within the context of the identification radio connection (F1) from step b) between the identification medium (3) and the authorization system (2), d) evaluating the radio communication (F2, F3) from step c) to determine whether the identification radio connection (F1) takes place or not, and e) submitting a feedback to the user taking into account the result of the evaluation from step d). Method according to Claim 8 wherein the identification medium (3) comprises at least one button (9) provided for operation by a user to initiate an identification radio connection (F1), the initiation of the identification radio connection (F1) in step b) with at least one control pin (F1) 10), with which the at least one button (9) on the identification medium (3) is actuated. Method according to one of Claims 8 or 9 in which the user is asked with the feedback in step e) to correct a storage position of the identification medium (3) at a receiving location (5) if no identification radio connection (F1) has been detected in step d). Method according to Claim 10 , Wherein the feedback, an optical and / or acoustic request to correct the storage position of the identification medium (3) at the receiving location (5). Method according to one of Claims 8 to 11 , where the user with the feedback in step e) is informed that the deposition of the identification medium (3) at the receiving location (5) was successful if in step d) an identification radio link (F1) was detected. Method according to Claim 12 wherein the feedback that the deposition of the identification medium (3) at the receiving location (5) was successful, via a security radio module (14) to a mobile terminal (15) of the user takes place.

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