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by greatjack613 2130 days ago
I am more curious about the technical aspect.

I could not find any android documentation on building wifi nfc tags that are automatically connected to by the system.

Can someone explain how this is working? Hidden apis? A NFC spec, or something else?

2 comments

https://www.digitaltrends.com/how-to/diy-nfc-coasters/ This has some steps to use your phone to create the NFC Sticker.