Programmable RFID Postage Stamps
30 January 2010
United States Patent 7539622 discusses what type of postage stamps we may encounter in the near future.
The stamp has a top layer having a visual display, middle layer having an electronics layer, and a bottom layer having an adhesive layer. The stamp is encoded such that the visual display of the stamp is altered to indicate a state of the stamp.
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Categories: digital philately
patent 7539622, rfid postage stamps
