Patent ID: 11924633
Assignee: MAXELL, LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A method to switch a mobile terminal between a locked state and an unlocked state in which unauthorized access of the mobile terminal is prevented, comprising:
transmitting and receiving information to and from a wireless router by performing wireless LAN communications;
transmitting and receiving information to and from a base station by performing wireless communications;
storing a password corresponding to the mobile terminal and information about another mobile terminal;
performing Bluetooth short-range wireless communications;
controlling the Bluetooth transceiver to search for the another mobile terminal and determine whether the another mobile terminal is within range to conduct Bluetooth short-range wireless communications, wherein the Bluetooth short-range wireless communications are performed with the another mobile terminal when the another mobile terminal is determined to be within range and when information about the another mobile terminal is stored in the memory;
displaying, based on the determination, first information to indicate that the another mobile terminal is within range;
displaying second information corresponding to an unlock operation when the mobile terminal is in the locked state;
determining a location of the mobile terminal via GPS;
switching the mobile terminal from the unlocked state to the locked state when the mobile terminal is not used for a predetermined period of time;
switching the mobile terminal from the locked state to the unlocked state when it receives input of a password and the inputted password matches the stored password;
performing biometric authentication to authenticate the user based on a face match operation;
switching the mobile terminal from the lock state to the unlocked state when the biometric authentication is performed; and
performing a warning operation such that the location of the mobile terminal is transmitted to the another mobile terminal during the warning operation,
wherein the another mobile terminal also has a Bluetooth transceiver and a wireless LAN communication circuit, and
wherein the first mobile terminal and the another mobile terminal are both previously registered mutually to the same user and the mutually registered terminals are configured to communicate with each other via Wi-Fi Direct.