Respective initial tokens are generated at a first computer for respective instantiations of respective control paths. The respective control paths include a plurality of tasks arranged in respective sequences. Respective expected signatures of the respective control paths are generated based on the respective initial tokens, the respective sequences, and respective keys for each of the plurality of tasks in the respective control paths. Upon receiving, from a second computer, respective signatures of the respective control paths, the second computer is permitted to operate, via the respective control paths, an object based on the respective expected signatures matching the respective signatures.

An electronic device for vehicle immobilizer timer based on electronic key learning to facilitate anti-theft security of a vehicle is provided. The electronic device receives first information indicative of learning of an electronic key of the vehicle. The electronic device controls selection of a delay time of an operation mode of the vehicle, based on the first information. The electronic device controls the operation mode of the vehicle to be set in an immobilized state, based on the delay time and the first information. The circuitry detects whether a request of a user to mobilize the vehicle is received. The circuitry authenticates the user, based on the detection that the request is received. The electronic device controls the operation mode of the vehicle to be set in a mobilized state based on the expiry of the delay time or the authentication of the user.

A vehicle control device includes a processor. The processor is configured to acquire vehicle state information indicating a plurality of states of a target vehicle in which engine immobilization is to be enabled, is configured to determine a state of the target vehicle, based on the vehicle state information, by comparing the states of the target vehicle with respective corresponding conditions one after another in a predetermined order, and is configured to enable the engine immobilization in the target vehicle when the states meet the corresponding conditions respectively in the predetermined order.