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Skip the Touch ID Scan: Unlock iPhone Duo With Apple Watch
iPhone Duo uses a Touch ID sensor built into the side button for authentication. Some may feel this is a step backwards after almost a decade of Face ID on iPhones, but if you wear an Apple Watch, you can use it to unlock your iPhone Duo instead. This way, you don't need to touch the side button at all. It's the closest thing we have to a seamless Face ID experience on iPhone Duo (at least for now). The feature is called Unlock with Apple Watch.
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