The latest iPhone 8 rumor out of iDrop News claims Apple is testing two iPhone 8 prototypes, one with a Touch ID sensor on the back and another with the sensors placed under the glass. The new leak—purportedly from a Foxconn employee—supports last week’s images of a supposed rendering of an iPhone with the Touch ID, placing that model in contention with another that would place the sensor on the front like current models, but embed it under the glass rather than putting it in a dedicated home button. The report claims Apple is down to two models under consideration, a big reduction from the “more than ten prototypes” estimates we heard last fall. This latest prototype is also said to feature an “invisible” front-facing camera under the display itself—allowing for 4mm bezels around all four edges of the phone—and a large power button with two points of contact for some as-yet-unknown reason.