Automation devices that control lighting, temperature, and security alarms have been around for decades. But smartphones and tablets may finally bring them into the mainstream. Android phone users, for instance, can control the innovative Nest Learning Thermostat with the free Nest Mobile app.
The $249 Nest is a stylish and smart device that studies your thermostat-usage habits and adjusts itself accordingly. The Nest app lets you change your home or office temperature remotely, check stats on heating and cooling usage, and monitor other settings as well. The bad news: It currently doesn't work with Android tablets.