According to Kinja Deals, August’s third genration Smart Lock allows users to lock and unlock their door from their phones.Currently, the silver or black model of the lock is on sale for just $99. This is an an all-time low price for the smart lock. Unlike previous locks by August, this lock doesn’t have Wi-Fi built in. Instead, it uses Bluetooth to communicate with your phone. However, you can add a Wi-Fi hub to your router to access it over the internet from anywhere.