RFID/NFC Nail Stickers with LEDs - Ten Pack
If you want to turn your fingertips in to RFID NFC tags, then PMD Way has you covered with these tiny tags with inbuilt LED.
Each tag has double-sided tape to help stick to your nail, and then you apply coats over the nail. Select your required LED color using the options menu. Please note that these do not work with iPhones.
Example of use with customer-supplied artificial nail: