Neopost web-enabled stamps

Neopost web-enabled stamps or Neopostage is a postage stamp that is part of the family of computerized postage. These stamps were developed by Neopost Online and Northrop Grumman Corporation. The joint effort resulted in an innovative self-service stamp vending system. Neopost Online is a US subsidiary of Neopost Inc. Testing of this system was authorized by the United States Postal Service (USPS) in March 2001.
The self-service stamp vending system allowed consumers to:
The kiosk then:
The ability to peruse, request, authorize, print, and dispense a stamp purchase using the Internet made these the world's first browser-based stamps.
The Neopost web-enabled stamps are listed in Scott catalogue (Specialized Version) under "Computer Vended Postage" section with several unlisted varieties.