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Edible, decaying, "intentionally fragile" RFID

From "Invention: Edible RFID," by Barry Fox, New Scientist News Service, 12 February:

"Inventors keep coming up with new ways to exploit RFID (Radio Frequency Identification) tags. The latest brainwave, from Kodak, is to use them to probe a person's digestive system...

"Kodak's digestible tags are harmless and intentionally fragile. The tags would be covered with soft gelatin that takes a while to dissolve in the stomach. After swallowing a tag a patient need only sit next to a radio source and receiver. They stop working when exposed to gastric acid for a specific period of time, providing a subtle way to monitor a patient's digestive tract.

"Kodak says that similar radio tags could also be embedded in an artificial knee or hip joint in such a way that they disintegrate as the joint does, warning of the need for more surgery.

"Attaching tags to ordinary pills could also help nurses confirm that a patient has really taken their medicine as ordered.

"Read the full edible radio patent application..."

[ - 14 February 2007]

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