Method for securely inputting password in computer program running on multitasking operating system, involves performing renewed calculation of screen positions for characters in case of selection of characters and confirmation of selection

摘要

The method involves executing a process (1) on a universal computer (2), and repeating visualization of characters on a computer screen of the universal computer for a short period in an endless loop. Renewed quasi-random calculation of screen positions is performed for the characters to be made visible on the computer screen of the universal computer in case of selection of characters and confirmation of the selection by a user, after visualization of the characters on the computer screen of the universal computer for a short period in the endless loop and with high or low thread priority.