Method for accessing a user operable device of controlled access

A method, comprising:

• receiving an access key in a controller via a short range communication network from a mobile device of a user, the access key being issued by a key authority and co-coded with one or more conditions for operating a user operable device having limited accessibility;
• generating a validation key in said controller;
• comparing the validation key with the access key;
• and
• if the access key is valid, granting access to the functions of the user operable device according to the one or more conditions co-coded in the access key.

A controller, comprising:

• a receiver, configured to receive an access key via a short range communication network from a mobile device of a user, the access key being issued by a key authority and co-coded with one or more conditions for operating a user operable device having limited accessibility,
• a key generator, configured to generate a validation key,
• a validation unit, configured to validate the access key by comparing the access key with the validation key, and
• a controlling unit, configured to provide access to the functions of the user operable device according to one or more conditions co-coded in the access key, if the access key is valid.

A mobile device comprising:

• a transmitter configured to transmit an inquiry from said mobile device via a wide area transmission network to a key authority for obtaining an access key for accessing functions of a user operable device having limited accessibility;
• a receiver configured to receive a request for information from the key authority;
• said transmitter further configured to transmit the requested information to the key authority, wherein the information is used by the key authority for co-coding the access key with one or more conditions for operating the user operable device;
• said receiver configured to receive the access key assigned by the key authority via the wide area transmission network;
• a storage unit configured to store the access key;
• and said transmitter configured to transmit via a short range communication network the access key to a controller unit for comparing with a validation key generated by the controller unit, and if the access key is validated, the access key to the functions of the user operable device is granted according to the conditions co-coded in the access key.

A method, comprising:

• receiving, from a mobile device of a user via a wide area transmission network, an inquiry for an access key for access key for accessing functions of a user operable device having limited accessibility;
• transmitting a request information of the user to the mobile device via the wide area transmission network;
• receiving the requested information of the user from the mobile device;
• generating the access key, the access key being co-coded with one or more conditions for operating the user operable device based on the received information of the user;
• transmitting the access key to the mobile device via the wide area transmission network for transmission to a controller unit of the user operable device via a short range communication network for accessing the functions of the user operable device;
• wherein a validation key is generated by the controller unit for comparing with the access key, and if the access key is validated, the access to the functions of the user operable device is granted according to the conditions co-coded in the access key.

A key authority for communicating with a mobile device of a user via a wide area transmission network, wherein the key authority is configured to:

• transmit a request information of the user to the mobile device;
• receive the requested information of the user from the mobile device;
• generating the access key, the access key being co-coded with one or more conditions for operating the user operable device based on the received information of the user;
• transmit the access key to the mobile device via the wide area transmission network for transmission to a controller unit of the user operable device via a short range communication network for accessing the functions of the user operable device;
• wherein a validation key is generated by the controller unit for comparing with the access key, and if the access key is validated, the access to the functions of the user operable device is granted according to the conditions co-coded in the access key.

A key authority comprising:

• means for receiving from the mobile device an inquiry for an access key for accessing functions of a user operable device having limited accessibility;
• means for transmitting a request for information of the user to the mobile device;
• means for receiving the requested information of the user from the mobile device;
• means for generating the access key, the access key being co-coded with one or more conditions for operating the user operable device based on the received information of the user;
• and
• means for transmitting the access key to the mobile device via the wide area transmission network for transmission to a controller unit of the user operable device via a short range communication network for accessing the functions of the user operable device;
• wherein a validation key is generated by the controller unit for comparing with the access key, and if the access key is validated, the access to the functions of the user operable device is granted according to the conditions co-coded in the access key.