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Edible RFID for Covert Location Signalling

An Edible RFID "pill" could be ingested prior to detention to covertly signal one's location.

Photo of Avi Solomon
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An Edible RFID "pill" could be ingested prior to detention to covertly signal one's location.

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Photo of Manjul

I wonder if this doesn't have to be a pill, but a special marker of some sort? I mean bikes etc. are being marked everyday that can assist in determining their geolocations, so i wonder if people can be marked on their skin (inside ears etc.) ?

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