Handheld device and method for unlocking the handheld device

  • US 8,914,877 B2
  • Filed: 05/06/2013
  • Issued: 12/16/2014
  • Est. Priority Date: 08/16/2012
  • Status: Active Grant
First Claim
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1. A method for unlocking a handheld device with a touch screen, comprising:

  • storing login information of a social network in a storage system of the handheld device;

    accessing the social network by the login information stored in the storage system;

    acquiring information of a plurality of friends from the social network to store in the storage system, wherein information of one of the plurality of friends comprises a primary key and a secondary key;

    selecting a first amount of the primary key and a second amount of the secondary key from the storage system;

    creating an unlocking interface on the touch screen according to the second amount of the secondary key and a question based on the first amount of the primary key;

    detecting an input event of a user on the unlocking interface;

    determining whether the input event corresponds to an answer linked with the question; and

    transitioning the handheld device from a lock state to an unlock state upon the condition that the input event corresponds to the answer.

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