Instead of beeping loudly every time someone burns dinner, the smoke detector informs those in the area that there is smoke, audibly noting which room the smoke is in. Designed by Nest CEO Tony Fadell, the former Apple employee responsible for the iPod, the alarm can be turned off by waving at the device. The device also doubles as a carbon monoxide detector, and runs for four years on six AA batteries. When it's time to replace the batteries, an alert is sent to the user’s smartphone. “Safety,” Fadell told The Verge, “shouldn’t be annoying.”