Unlike the iPhone, GW4 does not feature multi-touch technology, meaning that users cannot manipulate the phone by sliding their finger across the screen.
The dimmer has a unique multi-touch capacitive interface that allows the light to be turned on or off by sliding a finger up or down on the glass switch front.
Instead of gliding over fixed glass, your finger could handle secondary tasks by pushing in a specific direction, or simply pushing harder, on a sliding display.