Future Touch ID sensors may be embedded within the display It's the tradeoff that Apple has been making for years -- how to give us better signal reception, and secure user authentication, while also reducing bezels and notches. Now Apple may have found ways to get edge-to-edge displays that include both Touch ID and an antenna inside them. For all of this, though, there hasn't been much discussion about exactly why moving the sensor under the display is complex enough that Apple hasn't done it. A newly revealed patent application details the problems, and proposes solutions that involve building up a display out of layers that each do more than just pass light through.