MESH tags have sensors in them which can be used to automate and wirelessly control almost any object around. You can hang a MESH tag on the door and have another tag attached to a camera. When the door opens, the MESH tag detects it and triggers the tag on the camera to capture a photo of the person on the door. The tags connect to your mobile device via Bluetooth.
The kit contains a MESH button, an accelerometer tag, a LED tag, and a MESH GPIO. The MESH app has a very simple interface, enabling anyone without any technical knowledge to connect MESH devices together.
MESH also works with smart home devices like Philips Hue, Nest, WeMo, and other devices capable of IFTTT.