最初から指以外を登録して…

僕これ持ってますが、これ登録して持ち歩きとかですね(　´･‿･｀) https://www.kickstarter.com/projects/nanotips/taps-touchscreen-sticker-w-touch-id-ships-before-x

TAPS is a touchscreen sticker with a unique fingerprint for touch ID, that turns your ordinary gloves into touchscreen gloves.