RFID tag embedded in wristwatch

[CMYK]

Hi there; I'm very new to RFID technology.

I've extracted an RFID tag from its case to its bare antenna and chip, and have sealed it in vinyl, so that I can embed it inside my wristwatch. However it's not working (it works outside of the watch). Is the wristwatch's battery to blame? Any suggestions?

Thanks!

[mparadis]

Metal can interfere with communication between an RFID tag and a reader. If your watch has a metal backplate, it's probably to blame. We do sell RFID tags designed to be mounted on a metal surface, but I'm not certain they will work if surrounded by metal entirely.