HelioZZZ is an opacity changing eye mask that wakes you up with natural sunlight when you want it. The mask warms your eyes to help you fall/stay asleep and is controllable via a web-app interface.
Before going to bed, the user sets the alarm on their phone, and the mask becomes opaque and slightly warm to help the user fall asleep. Fifteen minutes before wake up, the mask begins the transition from a clear to an opaque state, allowing sunlight to penetrate through the mask gently waking up the user. the user can further snooze this alarm by pressing the button on the side, which causes the hydrogel to reverse back to the opaque state for 5 minutes.