Dropcam adds $29 motion sensors (and teaches its cam to recognize cats)

Dropcam, whose Wi-Fi video security system impressed us when we previously tried it, is now adding separate motion sensors to its product range. Costing just $29 each, Dropcam Tabs are small, weather-resistant devices that can be attached to doors, windows, and valuables. They use Bluetooth LE to connect to your existing Dropcam Pro camera which then sends push alerts when motion is detected, turning it into a much more comprehensive security system.

Dropcam says battery-life is rated for around two years, making Tabs close to fit-and-forget. Tabs can be pre-ordered today, and will be shipped in the summer.

The company has also made the Dropcam Pro suitable for more households by allowing it to recognize and ignore cats. Previously, the system would send push alerts any time it detected any movement, creating lots of false alarms as Tiddles engaged in her hectic schedule of moving from the sofa to the food dish and back.

Detecting pets usually requires 3D sensor systems which can measure the size of moving things, but Dropcam says that it has analyzed many hours of publicly-shared video in order to teach the system to recognize cats using only analysis of the visual data.