It can be triggered by human (or animals) movement of a particular interested area (ROI) is monitored by highly sensitive passive infrared (PIR) motion sensor and then capturing high quality photos (up to 24 pixels) or record HD video.
Impressive 0.5 second trigger speed (Pre Boot 0.3 seconds), zero second delay between triggers (still image only) and up to 3 photo multi-shot functions won't be missed.