ACCESS CONTROL METHOD, INFORMATION DISPLAY DEVICE USING THE SAME, AND INFORMATION DISPLAY SYSTEM

PROBLEM TO BE SOLVED: To solve the problem in which, in carrying out confidential information such as customer information in a mobile terminal, it is required to maintain confidentiality of the information and to prevent an unauthorized third party from accessing the confidential information even if the mobile terminal is stolen.SOLUTION: According to a disclosed access control method, an encryption key based on a planned route is generated and encryption is performed in advance, and when information is accessed, a decryption key is generated on the basis of an actual movement route regularly acquired. The encrypted information can be decrypted when the planned route matches the movement route.