skippy Posted September 28, 2018 Share Posted September 28, 2018 How do these actually work? https://www.lazada.co.th/products/nfc-acr122u-rfid-writerusb-sdk-ic-i2090410-s2430109.html?boost=2 Thank you. Link to comment Share on other sites More sharing options...
Crossy Posted September 29, 2018 Share Posted September 29, 2018 You could start here https://en.wikipedia.org/wiki/Near-field_communication Link to comment Share on other sites More sharing options...
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