Witness turns your Mac into a home alarm system, using its iSight camera as a motion sensor. If motion is detected, Witness sends mugshots and video to your iPhone or iPad.
Some apps offer a live video stream. While that sounds cool at first, it has many disadvantages. In contrast, Witness uses advanced motion detection to notify you right away when an intruder is detected.
If nothing happens at your house, Witness remains silent.
No need to interrupt you when everything is just fine.
Witness can be set to restrict motion detection to human faces. This may come in handy if you have pets running around the house.
Witness uses the location of your iOS device to automatically arm your alarm when leaving your house and to disarm it upon your return.
Watch live images from any Mac in your alarm system.
There are no limitations on how many Macs you can add to a single Witness account: you could add an entire computer lab.
Connect up to 3 USB or FireWire webcams to one Mac and use them all for surveillance.
Optimize camera settings for a specific location.
Trigger AppleScripts when the alarm is activated, deactivated, or when motion is detected.