Abstract: A method is provided for accessing a user operable device having limited access ability. The method comprises transmitting an inquiry from a mobile device of a user via a wide area transmission network to a key authority for obtaining an access key for accessing functions of the user operable device, receiving a request for information from the key authority, transmitting 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, receiving the access key assigned by the key authority via the wide area transmission network, and transmitting the access key to a controller unit of the user operable device via a short range communication network for accessing the functions of the user operable device.

Abstract: A method of joining a first device to a radio communications network controlled by a second device without contemporaneous user input of a secret at the second device, including: storing in the second device a secret generated at the second device; making the stored secret available in the first device; and creating in the first device and in the second device, using the secret, a secret key for use in securing communication between the first and second devices.

Abstract: A method is provided for accessing a user operable device having limited access ability. The method comprises transmitting an inquiry from a mobile device of a user via a wide area transmission network to a key authority for obtaining an access key for accessing functions of the user operable device, receiving a request for information from the key authority, transmitting 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, receiving the access key assigned by the key authority via the wide area transmission network, and transmitting the access key to a controller unit of the user operable device via a short range communication network for accessing the functions of the user operable device.

Abstract: Method for accessing a user operable device having a limited access ability by a user. Therefore a user transmits an inquiry using a mobile device via a wide area transmission network to a key authority. The key authority retransmits an electronic access key. This access key is stored in the mobile device and later transmitted to a controller unit controlling the access the user operable device allowing the user to operate on it.

Abstract: A method of joining a first device to a radio communications network controlled by a second device without contemporaneous user input of a secret at the second device, comprising: storing in the second device a secret generated at the second device; making the stored secret available in the first device; and creating in the first device and in the second device, using the secret, a secret key for use in securing communication between the first and second devices.

Abstract: Method for accessing a user operable device having a limited access ability by a user. Therefore a user transmits an inquiry using a mobile device via a wide area transmission network to a key authority. The key authority retransmits an electronic access key. This access key is stored in the mobile device and later transmitted to a controller unit controlling the access the user operable device allowing the user to operate on it.