In the german article they speculate that it could be used for tracking the details (freq, cores, bin, cache etc) of the chip when the lid is off. They also bel

In the german article they speculate that it could be used for tracking the details (freq, cores, bin, cache etc) of the chip when the lid is off. They also believe it might not be able to communicate via NFC when the lid and CPU fan are on the chip. Unless they've hidden an antenna somewhere this feels right to me.