PREPAID ACCESS TO DATA PROCESSING USING PORTABLE DATA STORAGE DEVICES Russian patent published in 2012 - IPC G06Q20/28 

FIELD: information technology.

SUBSTANCE: connection is established between a detachable data processing accounting device and a computer security module through a secure booting environment stored on the computer, wherein the detachable data processing accounting device includes a certain number of access accounting units stored in the secure flash memory of the data processing accounting device. The connection between the data processing accounting device and the security module is secured. It is determined whether said number of access accounting units exceeds a threshold value. Operation of the computer is restricted if said number of access accounting units is below the threshold value. At least one application on the computer is used if said number of access accounting units exceeds the threshold value. Said number of access accounting units is reduced during execution of said at least one application and in response to loss of connection between the detachable data processing accounting device and the security module, the computer is forcibly rebooted in the secure booting environment.

EFFECT: reducing time needed by a user to safely unblock a subscription computer.

18 cl, 6 dwg