Information processing devices and methods

A second information processing device comprising circuitry configured to:

• receive a signal from a first information processing device, the signal comprising:
• a digital signature associated with the first information processing device, first information indicating a first change of information stored at a first address defined with respect to a first data processing entity and a tokenization of the first address, the first address being derivable from the tokenized first address only by the first data processing entity for implementing the first change of information stored at the first address, and second information indicating a second change of information stored at a second address defined with respect to a second data processing entity and a tokenization of the second address, the second address being derivable from the tokenized second address only by the second data processing entity for implementing the second change of information stored at the second address;
• verify the digital signature associated with the first information processing device;
• and, upon successful verification of the digital signature:
• provide a control signal to the first data processing entity to control the first data processing entity to implement the first change of information at the first data processing entity, and
• provide a control signal the second data processing entity to control the second data processing entity to implement the second change of information at the second data processing entity.

A third information processing device for use with at least one of a first data processing entity and a second data processing entity, the third information processing device comprising circuitry configured to:

• receive a control signal from a second information processing device, the second information processing device providing the control signal to the third information processing device in response to receiving receive a signal from a first information processing device, the signal received by the second information processing device comprising:
• a digital signature associated with the first information processing device, and at least one of first information indicating a first change of information stored at a first address defined with respect to the first data processing entity and a tokenization of the first address, the first address being derivable from the tokenized first address only by the first data processing entity for implementing the first change of information stored at the first address, and second information indicating a second change of information stored at a second address defined with respect to the second data processing entity and a tokenization of the second address, the second address being derivable from the tokenized second address only by the second data processing entity for implementing the second change of information stored at the second address, wherein the control signal comprises the first information when the third information processing device is an information processing device of the first data processing entity and wherein the control signal comprises the second information when the third information processing device is an information processing device of the second data processing entity;
• when the third information processing device is an information processing device of the first data processing entity, in response to the control signal, de-tokenize the first address and implement the change of information located at the first address;
• and
• when the third information processing device is an information processing device of the second data processing entity, in response to the control signal, de-tokenize the second address and implement the change of information located at the second address.