Patent ID: 7006116

Claim:
A hand-held portable electronic display device comprising: an electronic display; a memory electrically coupled with said display for storing information to be displayed on said display, said memory further capable of storing protected information in an encrypted format and for storing a first decryption code associated with said protected information; circuitry coupled with said display and with said memory for reading said first decryption code from said memory; and a connector capable of attaching a removable cover associated with said protected content to said display device, wherein said removable cover includes a tag containing a second decryption code associated with said protected information, wherein said circuitry is further capable of: detecting said second decryption code from said tag when said removable cover is attached to said display device, comparing said first decryption code and said second decryption code, and decrypting said protected information stored in said memory for enabling display of said protected information in an unencrypted format on said display if said first decryption code is compatible with said second decryption code.