7,170,971 System and method for safe mail transmission
  Issued: January 30, 2007
  Filed: March 8, 2003
  U.S. Class: 378/62
Abstract:  A method and system for safe mail transmission is provided. A letter is created with a marking compound that provides contrast in a detection system. The letter is sealed in a protective enclosure and scanned when received.

Posted by GEN-ERIC at 11:12:49 am into the following categories: Patents of the Day

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