I'm kind of new with NFC and Raspberry Pi and I'm trying to create an authentication system for a PC using Pi with an ACR122U USB NFC Tag Reader. I was wondering if there's a way I can use NFC tag as authentication tool, so when the tag is tapped, it opens a url, connects to a remote database and checks if that is the original Tag and returns true or false. I'm kind of lost how to connect the tag to a remote database.
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1 Answers
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You can use two approaches: * Use two-way authentication between a smart card (e.g. NXP MIFARE Plus, NXP MIFARE DESFire) and the remote server. This is not possible using a NDEF message, but requires sending APDUs to the card. * Use NTAG 413, which generates a CMAC within a NDEF message every time you tap it. This CMAC can be verified by the backend.
