Method for entering confidential code to device e.g. computer, to authenticate user, involves selecting character based on time of detection switching of input button, and forming ring for entering each letter in confidential code

摘要

The method involves detecting switching of an input button (15), displaying a sequence of symbols on a display module (24) based on detection of switching of the input button. Successive display is continued until detecting another switching of the input button, where the latter switching corresponds to the activation or deactivation of the input button. A character e.g. digit, letter and symbol, is selected based on the time of detection the latter switching of the input button. A ring is formed to enter each letter in confidential code. Independent claims are also included for the following: (1) a computer program comprising a set of instructions to perform a method for entering a confidential code (2) a computer-readable recording medium comprising a set of instructions to perform a method for entering a confidential code.