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A mostly paper replacement for single-use RFID tags
(hackaday.com)
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this post was submitted on 28 Oct 2023
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Technology
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Unless I knew for sure that I could trust the person who handed me the card, there's no way in hell I'm scanning an RFID or a QR code or anything else on a business card. It sounds like something someone would hand out at DefCON and then announce later in the day that they've used the card to compromise any device that scanned it.