Facebook's Oculus unit has agreed to buy Israeli gesture recognition technology developer Pebbles Interfaces for an undisclosed amount. No financial details were disclosed.

Pebbles' technology detects and tracks hand movement. It is aimed primarily at gamers but also has applications for TV, computers, or smartphone operation while driving.

Investors in Pebbles include Chinese mobile phone maker Xiaomi, Israeli venture capital fund Giza and U.S. storage firm SanDisk.