Apple Watch Will Use Skin Contact for Apple Pay Security
When Apple announced that the Apple Watch would be able to use Apple Pay, the company's new mobile payment initiative, many wondered how secure the payments would be if the device lacked the security of Touch ID, which is used in the iPhone 6's implementation. Now, several members of the press have confirmed how the system works.
Both Rene Ritchie of iMore and Cult of Mac report that when a user first puts on the Watch they must type in a PIN code to authorize Apple Pay. Once it's on, the Watch uses constant skin contact, which it can sense using the four sapphire-covered lenses on the underside of the device, to authorize payments. However, once the device is removed from a user's wrist, they must re-enter their PIN when putting the device back on their wrist.
