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System and method for content protection on a computing device

  • US 8,190,913 B2
  • Filed: 04/29/2005
  • Issued: 05/29/2012
  • Est. Priority Date: 04/30/2004
  • Status: Active Grant
First Claim
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1. A method for operation upon a mobile device that is capable of displaying user interfaces, comprising:

  • receiving input which indicates that the mobile device is to enter into a protected mode, wherein entering the protected mode includes locking the mobile device;

    encrypting data, by the mobile device, associated with fields displayed on a user interface, the data associated with the displayed fields having been entered at the user interface;

    storing on the mobile device the encrypted user interface field data;

    leaving the protected mode and decrypting the stored encrypted user interface field data;

    populating one or more user interface fields with the decrypted user interface field data; and

    displaying the user interface with the decrypted user interface field data, thereby allowing the mobile device to return to the same screen that was displayed on the user interface before the mobile device entered into the protected mode, wherein user field values are entered into one or more of the fields displayed on the user interface, and wherein the user entered field values are the data that is encrypted during said encrypting step.

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