Processing system

A processing system for a plurality of users of a building or vehicle, the processing system comprising:

• a plurality of local nodes arranged in the building or vehicle, wherein each local node stores a copy of a block-chain;
• and
• a processing unit, which is coupled to the local nodes, and is configured to receive a processing request of a user and to verify the processing request by comparing a piece of processing information with the stored block-chain on at least one of the local nodes, to grant access authorization to the user,
• wherein the processing information includes a piece of information from biometric data of the user,
• wherein one local node of the plurality of local nodes stores the biometric data of the user, and
• wherein, when the user is granted access authorization in a station of the block-chain, a positive check result from the station of the block-chain is also entered into the block-chain and the block-chain is distributed to further nodes from the plurality of local nodes.

A method for processing a plurality of users of a building or a vehicle, the method comprising:

• storing a copy of a block-chain in a plurality of local nodes;
• receiving a processing request of a user;
• verifying the processing request by comparing a piece of processing information with the stored copy of the block-chain on at least one of the plurality of local nodes in order to grant access authorization to the user, wherein the processing information includes a piece of information from biometric data of the user;
• and
• storing in one local node of the plurality of local nodes the biometric data of the user, wherein, when the user is granted the access authorization in a station of the block-chain, a positive check result from the station of the block-chain is also entered into the block-chain and the block-chain is distributed to further nodes from the plurality of local nodes.