Apple watch
My wife has a reaction to the back of an Apple Watch, would a thin coating of nail polish or clear coat interrupt the charging process?
Question marked as
It more than likely will. It will probably also affect he heart rate sensors while she is wearing it. See the 'For people who are sensitive to certain materials' section in:
Wearing your Apple Watch - Apple Support
and step 3 in:
If your Apple Watch won't charge or it won't turn on - Apple Support
