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by Q&A Engineer (11.1k points)
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1、How to read nfc constantly :
Please refer the guide:

2、This module is non-Android standard NFC SDK, so there is no intent to detect and listen for the card

Here's an example of how to loop check card

Regarding password verification and read/write card operations, it depends on your logic, just like android NFC, you need to write code to verify your password and read/write operations.

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