Lenovo ThinkPad X12 Detachable Gen 1 User Manual page 31

By using NFC, you can simply tap and connect your tablet and another NFC-enabled device over a few
centimeters or inches. To pair with an NFC card or smartphone:
Note: Ensure that the NFC card is in NFC Data Exchange Format (NDEF), otherwise the card cannot be
detected.
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Chapter 3 Explore your computer