While Apple has flirted with biometric-based patents before, we've yet to see them implemented in real-world technology. That hasn't stopped it from filing yet another one though, as the latest application reveals a fingerprint sensor apparently embedded into the iPhone itself. The patent describes a hardware "window" that can become selectively "transparent or opaque." When transparent, it would reveal a component comprised of an "image capture device, a strobe flash, a biometric sensor, a light sensor, a proximity sensor, or a solar panel, or a combination thereof" as a method of unlocking the phone.
Engadget , Apple files patent application for fingerprint sensor that can be transparent or opaque, Apple files patent application for fingerprint sensor that can be transparent or opaque
