Edge Sense is a feature found on some smartphones, particularly those made by HTC. It allows users to interact with their device by squeezing the edges of the phone. This can be used to launch apps, take photos, or access other functions without needing to touch the screen. The technology works through pressure sensors embedded in the phone's frame. When a user applies pressure, the device recognizes the gesture and performs the assigned action. This provides a convenient way to multitask and enhances the overall user experience by offering an alternative method of control.