PROTECTION METHOD USING MULTIPLE USER IDENTIFICATION INFORMATION ITEMS

摘要

PURPOSE: A protection method using a plurality of user identification information items is provided which requests a user to input at least two user identification information items and identifies the user based on the interval between the two inputs to prevent important data and information from being exposed to people other than users authenticated. CONSTITUTION: An accurate time interval between inputs of information items with respect to a plurality of user identification information items sequentially inputted is confirmed. Based on the confirmed time interval, it is judged whether a user is allowed to access resources or not. The input time interval corresponds to an input time interval between the first user identification information and the second user identification information. When the input time interval exceeds a predetermined reference time, the input user identification information is judged to be invalid so that the user is not allowed to access the resources.