You phone can already tell when you’re home, at work, etc. But it can’t tell whether you’re at your desk, sitting on the couch, or hopping in the car. At least, it can’t without the Dot Push Notifier. Using Bluetooth, each individual Dot keeps precise track of your phone’s location, which lets it automatically pull up relevant apps — maps and music in the car, Netflix and your remote on the couch, and your alarm clock and weather in bed — and control other smart devices like your locks, security system, and lights. $20 on Kickstarter.