Vertical Computer Systems Inc (fka VCSY)

[doc2016]

Yes, it is possible to use the body as a communications connection between a smartwatch and your smartphone. One way to achieve this is through Near Field Communication (NFC) technology, which enables the exchange of data between devices over a distance of about 4 cm 1 . However, NFC is not the only way to connect a smartwatch to a smartphone. Smartwatches can also communicate with smartphones via Wi-Fi and Bluetooth 23. Once your smartwatch is paired with your phone, the device will intelligently choose the most power-efficient available connection on its own 2.

I hope this helps! Let me know if you have any other questions.