Principle: In the K1 development board, the onboard NFC chip comes with a unique serial number, and the unique ID is achieved by obtaining the UID of the chip.

Sample test program download:
Source code download:http://dd.youyeetoo.cn:5000/sharing/V4zKgUX0I
EXE execution program downloadd:http://dd.youyeetoo.cn:5000/sharing/op5rZ5V59
