METHOD FOR MANAGING ACCESS RIGHTS TO A VEHICLE BY MULTIPLE USERS AND SYSTEM FOR USE IN EXECUTING THE METHOD

Abstract

A method for managing access rights to a vehicle for multiple users, each of whom is assigned a respective mobile device from among several mobile devices, wherein a respective digital vehicle key for the vehicle is stored on each mobile device for activating at least one predefined function of the vehicle, has the following features: Sending a request from one of several mobile devices (different from the one mobile device) to the one mobile device to obtain permission to access the vehicle for a specific period of time; Checking, by a user to whom the mobile device is assigned, the request, and, based on a result of the check, Granting the right of access to the vehicle for the specified period in such a way that, during the specified period, at least one predetermined function of the vehicle can only be activated using a digital vehicle key stored on one of the several mobile devices, or using the digital vehicle key stored on one other mobile device. Blocking access to the vehicle for a specific period of time in such a way that, during that period, at least one specified function of the vehicle cannot be activated using the digital vehicle key stored on another mobile device.

Description

[0001] The present invention relates to a method for managing access rights to a vehicle of multiple users and to a system configured such that the method for managing access rights to the vehicle of multiple users can be carried out by two or more users using the system.

[0002] In addition to conventional (radio) vehicle keys, which are typically designed as remote controls, digital vehicle keys ("digital keys") are increasingly being used, which can be stored on a mobile device such as a smartphone. Instead of the conventional key, the digital vehicle key enables, for example, vehicle unlocking and locking via a wireless (communication) connection with the vehicle, for example using Bluetooth, in particular Bluetooth Low Energy (BLE), UWB (Ultra-Wideband) or NFC (Near Field Communication). For this purpose, a corresponding communication device or communication apparatus in the vehicle establishes a wireless connection with a corresponding mobile device of a user or a communication device on which the digital vehicle key is stored.

[0003] The advantages of a digital vehicle key lie primarily in its functionality and convenient handling. Instead of having to carry around a bulky key, the vehicle owner can store the digital key on a mobile device, such as their smartphone. This minimizes the risk of loss or theft of the key. To enable use of the digital vehicle key by another person who does not have the smartphone with the digital vehicle key, it can be provided to share the digital vehicle key with that person. For this purpose, the digital vehicle key can be copied to the other person's smartphone using an app and a cloud service, for example.For example, vehicles in a company fleet or a single vehicle owned by a private individual can easily be used by different people without the need to hand over the keys each time a different person uses the vehicle.

[0004] A case may arise in which two or more persons or users, on whose mobile devices a digital vehicle key for the vehicle is stored, want to use the vehicle at the same time for different purposes, but the use of the vehicle by several users for different purposes at the same time is not possible.

[0005] It is an object of the present invention to improve management of access rights to a vehicle by multiple users.

[0006] This object is achieved according to the teaching of the independent claims. Various embodiments and further developments of the invention are the subject of the dependent claims.

[0007] A first aspect of the invention relates to a method for managing access rights to a vehicle for multiple users, each of whom is assigned a respective mobile terminal from a plurality of mobile terminals, wherein a respective digital vehicle key for the vehicle, assigned to the respective mobile terminal, is stored on each mobile terminal for activating at least one predetermined function of the vehicle, the management of access rights to the vehicle is carried out using a mobile terminal, in some embodiments specific, of the plurality of mobile terminals, and the method comprises: Sending a request from another mobile terminal of the plurality of mobile terminals, different from the one mobile terminal, to the one mobile terminal in order to obtain approval for the right of access to the vehicle for a specific period of time; Checking, by a user to whom the mobile device is assigned, the request, and, based on a result of the check, Releasing the right of access to the vehicle for the specific period of time in such a way that, during the specific period of time, the at least one predetermined function of the vehicle can be activated using a digital vehicle key stored on one of the several mobile terminals only using the digital vehicle key stored on the other mobile terminal and using the digital vehicle key stored on the one mobile terminal, or Blocking the right of access to the vehicle for the specific period of time in such a way that during the specific period of time at least one predetermined function of the vehicle cannot be activated using the digital vehicle key stored on the other mobile terminal.

[0008] In some embodiments, this makes it possible to ensure that, during the specific period of time, at least one predefined function of the vehicle can be activated using a digital vehicle key stored on one of the multiple mobile devices only using the digital vehicle key stored on the other mobile device and using the digital vehicle key stored on the one mobile device. Thus, users of the multiple users who are not one or the other user cannot activate the predefined function of the vehicle during the specific period of time using the digital vehicle key stored on their mobile device.

[0009] In this way, one user can easily manage the access rights to the vehicle in such a way that it is ensured that another user, to whom the other mobile device is assigned, and at the same time the user himself, for example in an emergency, can use the vehicle during the specified period.

[0010] In this case, checking the request may include checking whether or not the access right has already been (otherwise) released for one of the users within the specific period of time, and releasing or blocking the access right may occur depending on whether or not the access right has already been (otherwise) released for one of the users within the specific period of time.

[0011] The vehicle may have a communication device and the mobile terminals may have a communication device, wherein the communication device and the communication devices are configured to communicate wirelessly with each other, for example to send the request and to release and / or block the access right.

[0012] Furthermore, the vehicle may have a control device configured to control the vehicle, in some embodiments the at least one predetermined function of the vehicle and the communication device.

[0013] In addition, the mobile devices can have a control device that is designed to control the respective mobile device.

[0014] The at least one predetermined function of the vehicle may include, for example, locking or unlocking the vehicle and / or starting a (drive) engine of the vehicle and the like.

[0015] The term "vehicle" as used herein refers in particular to a passenger car, including all types of motor vehicles, hybrid and battery-powered electric vehicles, as well as vehicles such as sedans, vans, buses, trucks, delivery vans, and the like. In particular, a vehicle may include a wireless communication device or communication apparatus for wireless communication with a mobile terminal.

[0016] The term “digital vehicle key” as used here refers in particular to an electronic medium that can be used to open, start, or control other functions of a vehicle that are normally performed with a conventional physical vehicle key. Unlike a conventional key, a digital vehicle key consists of digital information stored in an electronic device. A digital vehicle key can be implemented in various ways. One possibility is for the digital vehicle key to be stored in a mobile application, such as a digital wallet, on a smartphone. The smartphone then acts as the digital vehicle key and communicates wirelessly with the vehicle via a wireless and, in particular, encrypted connection in order to lock or unlock the vehicle or its doors and / or flaps.to unlock or start the (drive) engine. The wireless connection can be established via Bluetooth, especially BLE (Bluetooth Low Energy), or UWB, for example.

[0017] The term "mobile device" used here refers specifically to electronic devices that are portable and capable of communicating wirelessly with other devices or networks. These are handy devices that can often be carried in a pocket or held in the hand. Mobile devices include smartphones, tablets, laptops, smartwatches, and other similar devices. These devices typically use cellular networks, Wi-Fi, Bluetooth, or UWB to establish a wireless connection and enable data transmission.

[0018] The term "communication device" or "communication apparatus" used here refers in particular to a device or apparatus for wireless communication. This can be a single unit or multiple interacting units. In particular, a communication device or apparatus can comprise a control device or apparatus, a transmitter and receiver, and at least one corresponding antenna. In a vehicle, a communication device or apparatus can be distributed throughout the vehicle.

[0019] The term "CCC" used here refers specifically to the Car Connectivity Consortium. The Car Connectivity Consortium is a global association of automobile manufacturers, suppliers, and technology companies that develop standards for communication systems in vehicles. These include specifications for how vehicles should communicate with other devices such as smartphones and navigation systems. CCC-compliant therefore means, in particular, that the technology in question meets the CCC's requirements.

[0020] The terms "comprises," "includes," "includes," "has," "has," "with," or any other variation thereof, as used herein, are intended to cover non-exclusive inclusion. For example, a method or apparatus that includes or has a list of elements is not necessarily limited to those elements, but may include other elements not expressly listed or that are inherent in such a method or apparatus.

[0021] Furthermore, unless explicitly stated to the contrary, "or" refers to an inclusive "or" and not an exclusive "or." For example, a condition A or B is satisfied by one of the following conditions: A is true (or present) and B is false (or absent), A is false (or absent) and B is true (or present), and both A and B are true (or present).

[0022] The terms "a" or "an" as used herein are defined as "one or more." The terms "another" and "another," and any other variations thereof, are defined as "at least one other."

[0023] The term “plurality” as used here shall mean “two or more”.

[0024] The term “configured” or “set up” to fulfil a specific function (and respective variations thereof) is to be understood within the meaning of the invention that the corresponding device or apparatus is already in a design or setting in which it can carry out the function or is at least adjustable - i.e. configurable - so that it can carry out the function after being set accordingly. The configuration can be carried out, for example, by appropriately setting parameters of a process sequence or of switches or the like for activating or deactivating functionalities or settings. In particular, the device or apparatus can have a plurality of predetermined configurations or operating modes, so that the configuration can be carried out by selecting one of these configurations or operating modes.

[0025] Preferred embodiments of the method according to the first aspect are described below, which can each be combined with each other as desired and with the second aspect of the invention described below, unless this is expressly excluded or is technically impossible.

[0026] In some embodiments, a digital vehicle calendar is stored on each of the plurality of mobile terminals, which can be synchronized among the plurality of mobile terminals and, in some embodiments, is automatically synchronized and can be displayed on a respective display device of a respective mobile terminal, wherein the sending of the request comprises a selection of the specific time period in the digital vehicle calendar by another user to whom the one other mobile terminal is assigned, and a sending of the selected specific time period to the one mobile terminal.

[0027] This can further improve the management of access rights to the vehicle and / or make it easier or simpler to select the specific period.

[0028] In order to enable the selection of the specific period of time, the mobile terminals can each have an input device, wherein the selection of the specific period of time is carried out using the input device.

[0029] In this case, a respective display device and a respective input device can be formed jointly by an input and output device, in some embodiments by a touchscreen, with which the digital vehicle calendar can be displayed and the selection of the specific period can be carried out, for example by marking this specific period in the digital vehicle calendar and confirming the (marked) selection by a corresponding input.

[0030] In some embodiments, the option of selecting the specific time period is limited to periods for which no access right is granted to any other of the multiple users.

[0031] This can further improve the management of access rights to the vehicle and / or make it easier or simpler to select the specific period.

[0032] In some embodiments, the vehicle has a tank and a tank sensor for detecting a content of the tank and / or a battery, in some embodiments a drive battery, and a battery sensor for detecting a charge level of the battery and / or a position sensor, in some embodiments a receiver for receiving signals from a (global) navigation satellite system, for detecting a position of the vehicle, wherein together with the digital vehicle calendar, information about the position or location of the vehicle and / or about the content of the tank of the vehicle and / or about the charge level of the battery of the vehicle is shown on the display device.

[0033] In some embodiments, this allows multiple users to be informed at any time about the (current) contents of the tank and / or the (current) charge level of the battery and / or the (current) position of the vehicle by calling up the vehicle calendar on the respective mobile device.

[0034] In this case, the vehicle can be configured to send information about the position of the vehicle and / or about the contents of the vehicle's tank and / or about the charge state of the vehicle's battery via the communication device to the communication devices of the mobile terminals, wherein the display devices of the mobile terminals are configured to display this received information about the position of the vehicle and / or about the contents of the vehicle's tank and / or about the charge state of the vehicle's battery together with the digital vehicle calendar on the display device.

[0035] In some embodiments, the respective digital vehicle keys and the digital vehicle calendar are stored in a respective digital wallet of a respective mobile device.

[0036] In some embodiments, the method further comprises collecting respective usage data about the use of a respective digital vehicle key.

[0037] In this way, the use of the vehicle by a specific user can be monitored, for example, whether and when the vehicle was unlocked, the engine was started, the vehicle was relocked when parked, and the like. Since sharing the digital vehicle key and allowing different users to use one's vehicle can also pose a risk of misuse or security, it can be advantageous to have the ability to monitor usage so that action can be taken if misuse occurs.

[0038] In some embodiments, the method further comprises determining a state of the vehicle by the other user when the access right to the vehicle has been released for the specific period of time, before and / or after use of the vehicle by the other user, and entering information about the determined state of the vehicle, in some embodiments together with a time of determining the state of the vehicle, into the digital vehicle calendar.

[0039] For example, existing paint damage or similar on the vehicle can be recorded when determining the condition of the vehicle and corresponding information about the specific condition of the vehicle can be entered into the digital vehicle calendar.

[0040] In some versions, this allows multiple users to be informed at any time about the (current) status of the vehicle by calling up the vehicle calendar on the respective mobile device.

[0041] In some embodiments, a chat function is integrated into the digital vehicle calendar, whereby communication between the multiple users is possible using the chat function (via the input and output device or the touchscreen and the communication devices).

[0042] In some cases, this can improve coordination and planning regarding the use of the vehicle.

[0043] In some embodiments, the release of the access right comprises sending access right information to the vehicle that, in the specific period of time, the at least one predetermined function of the vehicle may only be activated using a digital vehicle key stored on one of the multiple mobile terminals using the digital vehicle key stored on the other mobile terminal and the digital vehicle key stored on the one mobile terminal, and, after receipt of the access right information by the vehicle, setting the vehicle in such a way thatthat during the specific period of time, the at least one predetermined function of the vehicle can be activated using a digital vehicle key stored on one of the several mobile terminals only using the digital vehicle key stored on the other mobile terminal and using the digital vehicle key stored on the one mobile terminal.

[0044] A second aspect of the invention relates to a system comprising a vehicle and a plurality of mobile terminals, wherein a respective mobile terminal is assigned to a respective user of a plurality of users and a respective digital vehicle key for the vehicle, assigned to the respective mobile terminal, is stored on each mobile terminal for activating at least one predetermined function of the vehicle, and the system is set up in such a way that a method according to one of the preceding claims can be carried out by the plurality of users using the system.

[0045] Further advantageous developments will become apparent from the following description of preferred embodiments. This is shown, partly schematically: Fig. 1 a system according to an embodiment, which is set up in such a way that, using the system, a method according to an embodiment for managing an access right to a vehicle of multiple users by two or more users can be carried out, and Fig. 2 a flowchart illustrating a method according to an embodiment for managing an access right to a vehicle of multiple users.

[0046] Fig. 1 shows a system 100 which is configured such that, using the system 100, a method according to an embodiment for managing an access right to a vehicle 1 of multiple users can be carried out by two or more users.

[0047] The system 100 comprises a vehicle 1 and a plurality of mobile terminals 6-1, 6-2, 6-3, wherein a respective mobile terminal 6-1, 6-2, 6-3 is assigned to a respective user of a plurality of users and a respective digital vehicle key 2-1, 2-2, 2-3 for the vehicle 1, assigned to the respective mobile terminal 6-1, 6-2, 6-3, is stored on each mobile terminal 6-1, 6-2, 6-3 for activating at least one predetermined function of the vehicle 1.

[0048] The vehicle 1 has a communication device 40, while the mobile terminals 6-1, 6-2, 6-3 each have a communication device 8-1, 8-2, 8-3, wherein the communication device 40 and the communication devices 8-1, 8-2, 8-3 are configured to communicate with each other wirelessly.

[0049] The vehicle 1 further comprises a control device 50 which is configured to control the vehicle 1, in some embodiments the at least one predetermined function of the vehicle 1 and the communication device 40.

[0050] Each of the mobile terminals 6-1, 6-2, 6-3 has a respective control device 9-1, 9-2, 9-3 which is configured to control the respective mobile terminal 6-1, 6-2, 6-3. Furthermore, each of the mobile terminals 6-1, 6-2, 6-3 has a digital wallet 7-1, 7-2, 7-3 in which the respective digital vehicle key 2-1, 2-2, 2-3 for the vehicle 1 and a digital vehicle calendar 3-1, 3-2, 3-3 which can be synchronized among the plurality of mobile terminals 6-1, 6-2, 6-3 and is automatically synchronized in some embodiments are stored and which can be displayed on a respective display device (not shown separately) which, together with a respective input device (not shown separately), is part of a respective input and output device 4-1, 4-2, 4-3, in particular a respective touchscreen, of a respective mobile terminal 6-1, 6-2, 6-3.

[0051] The vehicle 10 has a tank 10 and a tank sensor 11 for detecting a content of the tank 10 and / or a battery 20, in some embodiments a drive battery, and a battery sensor 21 for detecting a charge state of the battery 20 and / or a position sensor 30, for example a receiver for receiving signals from a (global) navigation satellite system, for detecting a position of the vehicle 1.The vehicle 1 is configured to send information about the position of the vehicle 1 and / or about the contents of the tank 10 of the vehicle 1 and / or about the charge state of the battery 20 of the vehicle 1 via the communication device 40 to the communication devices 8-1, 8-2, 8-3, wherein the display devices 4-1, 4-2, 4-3 of the mobile terminals 6-1, 6-2, 6-3 are configured to display this information about the position of the vehicle 1 and / or about the contents of the tank 10 of the vehicle 1 and / or about the charge state of the battery 20 of the vehicle 1 together with the digital vehicle calendar 3-1, 3-2, 3-3 on the display device 4-1, 4-2, 4-3.

[0052] Fig.2 shows a flowchart to illustrate a method according to an embodiment, which can be carried out, for example, using the system 100 described above by several, in some embodiments two or more, users, for managing an access right to a vehicle 1 of several users, each of whom is assigned a respective mobile terminal 6-1, 6-2, 6-3 of several mobile terminals 6-1, 6-2, 6-3, wherein on each mobile terminal 6-1, 6-2, 6-3 a respective digital vehicle key 2-1, 2-2, 2-3, assigned to the respective mobile terminal 6-1, 6-2, 6-3, is stored for the vehicle 1 for activating at least one predetermined function of the vehicle 1, and the management of the access right to the vehicle 1 takes place using a mobile terminal 6-1, 6-2, 6-3, which is specific in some embodiments, of the plurality of mobile terminals 6-1, 6-2, 6-3.

[0053] In a step S10 of the method, a request is sent from another mobile terminal 6-2, 6-3 of the plurality of mobile terminals 6-1, 6-3, 6-3, which is different from the one mobile terminal 6-1, to the one mobile terminal 6-1 in order to obtain approval for the right of access to the vehicle 1 for a specific period of time.

[0054] In a step S20 of the method, the request is checked by a user to whom the mobile terminal 6-1 is assigned.

[0055] Based on the result of the check, either in a step S30 of the method the access right to the vehicle 1 is released for the specific period of time in such a way that during the specific period of time the at least one predetermined function of the vehicle 1 can be activated using a digital vehicle key 2-1, 2-2, 2-3 stored on one of the multiple mobile terminals 6-1, 6-2, 6-3 only using the digital vehicle key 2-2, 2-3 stored on the one other mobile terminal 6-2, 6-3 and using the digital vehicle key 6-1 stored on the one mobile terminal 6-1, or in a step S40 the access right to the vehicle 1 is blocked for the specific period of time in such a way that during the specific period of time the at least one predetermined function of the vehicle 1 cannot be activated using the digital vehicle key 2-2, 2-3 stored on the one other mobile terminal 6-2, 6-3.2-3 can be activated S40.,

[0056] A digital vehicle calendar 3-1, 3-2, 3-3 can be stored on each of the plurality of mobile terminals 6-1, 6-2, 6-3, which can be synchronized among the plurality of mobile terminals 6-1, 6-2, 6-3 and, in some embodiments, is automatically synchronized, and which can be displayed on a respective display device 4-1, 4-2, 4-3 of a respective mobile terminal 6-1, 6-2, 6-3, wherein the sending of the request comprises a selection of the specific time period in the digital vehicle calendar 3-1, 3-2, 3-3 by another user to whom the other mobile terminal 6-2, 6-3 is assigned, and a sending of the selected specific time period to the one mobile terminal 6-1.

[0057] In this case, one possibility of selecting the specific time period can be limited to periods for which no access right is granted to any other of the multiple users.

[0058] Furthermore, the vehicle 1 can have a tank 10 and a tank sensor 11 for detecting a content of the tank 10 and / or a battery 20, in some embodiments a drive battery, and a battery sensor 21 for detecting a charge state of the battery 20 and / or a position sensor 30 for detecting a position of the vehicle 1, wherein together with the digital vehicle calendar 3-1, 3-2, 3-3, information about the position or location of the vehicle 1 and / or about the content of the tank 10 of the vehicle 1 and / or about the charge state of the battery 20 of the vehicle 1 is shown on the display device 4-1, 4-2, 4-3.

[0059] The respective digital vehicle keys 2-1, 2-2, 2-3 and the digital vehicle calendar 3-1, 3-2, 3-3 can be stored in a respective digital wallet 7-1, 7-2, 7-3 of a respective mobile terminal 6-1, 6-2, 6-3.

[0060] In some embodiments, the method further comprises capturing respective usage data about the use of a respective digital vehicle key 2-1, 2-2, 2-3.

[0061] In some embodiments, the method further comprises determining a state of the vehicle 1 by the other user when the access right to the vehicle 1 has been released for the specific period of time, before and / or after use of the vehicle 1 by the other user, and entering information about the determined state of the vehicle 1, in some embodiments together with a time of determining the state of the vehicle 1, into the digital vehicle calendar 3-1, 3-2, 3-3.

[0062] A chat function can be integrated into the digital vehicle calendar 3-1, 3-2, 3-3, whereby communication between the multiple users is possible using the chat function.

[0063] In some embodiments, the release of the access right includes sending access right information to the vehicle 1 that, in the specific period of time, the at least one predetermined function of the vehicle 1 may be activated using a digital vehicle key 2-1, 2-2, 2-3 stored on one of the plurality of mobile terminals 6-1, 6-2, 6-3 only using the digital vehicle key 2-2, 2-3 stored on the one other mobile terminal 6-2, 6-3 and the digital vehicle key 2-1 stored on the one mobile terminal 6-1, and, after receipt of the access right information by the vehicle 1, setting the vehicle 1 such that, in the specific period of time, the at least one predetermined function of the vehicle 1 may be activated using a digital vehicle key 2-1, 2-2, 2-3 stored on one of the plurality of mobile terminals 6-1, 6-2, 6-3 only using the digital vehicle key 2-1 stored on the one other mobile terminal 6-2,6-3 stored digital vehicle key 2-2, 2-3 and the digital vehicle key 2-1 stored on the one mobile terminal 6-1.

Claims

[1] A method for managing access rights to a vehicle (1) for a plurality of users, each of whom is assigned a respective mobile terminal (6-1, 6-2, 6-3) of a plurality of mobile terminals (6-1, 6-2, 6-3), wherein a respective digital vehicle key (2-1, 2-2, 2-3) for the vehicle (1) is stored on each mobile terminal (6-1, 6-2, 6-3) and is assigned to the respective mobile terminal (6-1, 6-2, 6-3) for activating at least one predetermined function of the vehicle (1), the management of access rights to the vehicle (1) is carried out using one, in particular a specific, mobile terminal (6-1) of the plurality of mobile terminals (6-1, 6-2, 6-3), and the method comprises: Sending a request from another mobile terminal (6-2, 6-3) of the plurality of mobile terminals (6-1, 6-3, 6-3) different from the one mobile terminal (6-1) to the one mobile terminal (6-1) in order to obtain a release for the right of access to the vehicle (1) for a specific period of time (S10); Checking, by a user to whom the one mobile terminal (6-1) is assigned, the request (S20), and, based on a result of the check, Releasing the access right to the vehicle (1) for the specific period of time such that, in the specific period of time, the at least one predetermined function of the vehicle (1) can be activated using a digital vehicle key (2-1, 2-2, 2-3) stored on one of the plurality of mobile terminals (6-1, 6-2, 6-3) only using the digital vehicle key (2-2, 2-3) stored on the other mobile terminal (6-2, 6-3) and using the digital vehicle key (6-1) stored on the one mobile terminal (6-1) (S30), or Blocking the right of access to the vehicle (1) for the specific period of time in such a way that, during the specific period of time, the at least one predetermined function of the vehicle (1) cannot be activated using the digital vehicle key (2-2, 2-3) stored on the other mobile terminal (6-2, 6-3) (S40). [2] Method according to claim 1, wherein a digital vehicle calendar (3-1, 3-2, 3-3) is stored on each of the plurality of mobile terminals (6-1, 6-2, 6-3), which can be synchronized, in particular automatically synchronized, among the plurality of mobile terminals (6-1, 6-2, 6-3), which can be displayed on a respective display device (4-1, 4-2, 4-3) of a respective mobile terminal (6-1, 6-2, 6-3), and wherein the sending of the request comprises a selection of the specific time period in the digital vehicle calendar (3-1, 3-2, 3-3) by another user to whom the one other mobile terminal (6-2, 6-3) is assigned, and a sending of the selected specific time period to the one mobile terminal (6-1). [3] Method according to claim 2, wherein a possibility of selecting the specific period of time is restricted to periods for which no access right is released for another of the plurality of users. [4] Method according to claim 2 or 3, wherein the vehicle (1) has a tank (10) and a tank sensor (11) for detecting a content of the tank (10) and / or a battery (20), in particular a drive battery, and a battery sensor (21) for detecting a state of charge of the battery (20) and / or a position sensor (30) for detecting a position of the vehicle (1), and together with the digital vehicle calendar (3-1, 3-2, 3-3) information about the position of the vehicle (1) and / or about the content of the tank (10) of the vehicle (1) and / or about the state of charge of the battery (20) of the vehicle (1) is displayed on the display device (4-1, 4-2, 4-3). [5] Method according to one of claims 2 to 4, wherein the respective digital vehicle keys (2-1, 2-2, 2-3) and the digital vehicle calendar (3-1, 3-2, 3-3) are stored in a respective digital wallet (7-1, 7-2, 7-3) of a respective mobile terminal (6-1, 6-2, 6-3). [6] Method according to one of claims 2 to 5, further comprising detecting respective usage data about the use of a respective digital vehicle key (2-1, 2-2, 2-3). [7] Method according to one of claims 2 to 6, further comprising determining a state of the vehicle (1) by the other user when the access right to the vehicle (1) has been released for the specific period of time, before and / or after use of the vehicle (1) by the other user, and entering information about the specific state of the vehicle (1), in particular together with a time of determining the state of the vehicle (1), in the digital vehicle calendar (3-1, 3-2, 3-3). [8] Method according to one of claims 2 to 7, wherein a chat function is integrated into the digital vehicle calendar (3-1, 3-2, 3-3), wherein communication between the plurality of users is enabled using the chat function.[9] Method according to one of the preceding claims, wherein the releasing of the access right comprises sending access right information to the vehicle (1) that, in the specific period of time, the at least one predetermined function of the vehicle (1) may be activated using a digital vehicle key (2-1, 2-2, 2-3) stored on one of the plurality of mobile terminals (6-1, 6-2, 6-3) only using the digital vehicle key (2-2, 2-3) stored on the other mobile terminal (6-2, 6-3) and using the digital vehicle key (2-1) stored on the one mobile terminal (6-1), and, after receipt of the access right information by the vehicle (1), setting the vehicle (1) such that, in the specific period of time, the at least one predetermined function of the vehicle (1) may be activated using a digital vehicle key (2-1, 2-2, 2-3) stored on one of the plurality of mobile terminals (6-1, 6-2, 6-3). 2-2,2-3) can only be activated using the digital vehicle key (2-2, 2-3) stored on the other mobile terminal (6-2, 6-3) and using the digital vehicle key (2-1) stored on the one mobile terminal (6-1). [10] System (100) comprising a vehicle (1) and a plurality of mobile terminals (6-1, 6-2, 6-3), wherein a respective mobile terminal (6-1, 6-2, 6-3) is assigned to a respective user of a plurality of users and a respective digital vehicle key (2-1, 2-2, 2-3) for the vehicle (1) assigned to the respective mobile terminal (6-1, 6-2, 6-3) is stored on each mobile terminal (6-1, 6-2, 6-3) for activating at least one predetermined function of the vehicle (1), and the system (100) is set up such that a method according to one of the preceding claims can be carried out by the plurality of users using the system (100).

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