Accessory maker Moshi on Tuesday announced a new flip cover case for the iPhone 5s and iPhone 5c. The TouchSense, as the name implies, allows you to answer incoming phone calls and silence alarms without having to open the cover.
This nice feat has been accomplished by putting Moshi's proprietary touch-sensitive SensArray plates on the front cover, right where iOS 7's slide-to-unlock (or answer) thingie appears.
And what happens should Apple change the Lock screen UI in the future? I guess Moshi's engineers haven't bothered themselves with such mundane concerns...