This is a wacky gizmo but I love it; it’s a CO2 Sensor, Temperature Sensor, and Humidity Sensor. Primarily however, this device is a physical password manager that connects via USB or Bluetooth for mobile phones. It doesn’t physically store your passwords: it stores random strings which my custom hash function basically reinterprets back into your password, which can be beamed via Bluetooth to your phone. And it connects via Magsafe to the back of my iPhone, which is sick.