Abstract:
A data processor includes: a storage that stores a plurality of items of true/false determination information; a hardware processor that: receives an instruction of a data processing by a user; performs a data processing an instruction of which is received; selects a plurality of items of different true/false determination information from among the true/false determination information stored in the storage and sequentially presents the selected items of true/false determination information to a user; determines whether a user is authorized based on biological information of the user detected while the user is operating each item of true/false determination information sequentially presented; and performs a data processing when the hardware processor determines that the user is authorized, and stops performing a data processing when the hardware processor determines that the user is not authorized; and a biological information detector that detects biological information of a user who instructs a data processing.
Abstract:
A communication terminal includes a memory in which identification information associated with a user is stored, a controller that carries out authentication of the user, and a communication interface that transmits a signal including the identification information. When user authentication is successful, the controller sets the communication terminal to a first state in which the signal is transmitted to an external apparatus, and when user authentication is not successful, the controller sets the communication terminal to a second state in which the signal is not transmitted to the external apparatus.
Abstract:
A wearable computer includes: a first storage that permanently stores a first characteristic therein, the first characteristic representing a physical characteristic of an owner of the wearable computer; an obtaining portion that obtains a second characteristic, the second characteristic representing a physical characteristic of a user who wears the wearable computer; a determination portion that determines whether the user is the owner based on the first characteristic and the second characteristic; a first request portion that requests, when the user is determined to be the owner, to allow the user to log into another device; a second storage that temporarily stores the second characteristic therein; and a second request portion that requests, when the user is not determined to be the owner, to allow the user to log into that another device by sending the second characteristic stored in the second storage portion to that another device.
Abstract:
A terminal device includes, as functions for transmitting a file with a digital signature via mail, a first communication unit for carrying out communication with a terminal device used by an authorizer when a distance from that terminal device is not greater than a prescribed distance, an obtaining unit for obtaining a value obtained from a file to be transmitted, which has been encrypted through encryption processing performed by making use of information exchanged with that terminal device, and a transmission instruction unit for outputting an instruction for mail transmission of the file and the obtained encrypted value.