ELECTRONIC VERIFICATON DEVICE

摘要

A system and method is provided for verifying the location of a user when operating a program that tracks when a user is present at one or more locations. The system uses a display unit that displays a predictable pseudo random string that changes periodically. To verify that a user is at a particular location, the user enters the currently displayed pseudo random string in a web site. Based on the string entered, a server can verify the location of the user.