HTC U11 EYEs comes with a pressure-sensitive squeeze area on its frame. By squeezing the lower sides of HTC U11 EYEs, quickly access your favorite app or shortcut even while your phone is in sleep mode.
In addition to taking camera shots and launching your chosen apps, you can assign the squeeze gestures to perform a tap or double-tap inside an app.
See What is
Edge Sense? to learn more.