For me I have the following for the prevention:

1. Surveilance camera installed in front of the house and at the back. Even at night it can clearly see those people coming near the gate (of course with little light on outside). The camera is very visible sa tao.
2. The camera (front one) is hooked to video recorder that that records video for 980 hours straight using 1 VHS tape.
3. I have an alarm system in the house which I always turn on at night. It has an IR sensor just to make sure.
4. It has a panic button installed a different area in the house that can be activated anytime.
5. It has a dialler that call my relative once the alarm is activated.
6. The alarm bell is so load that the whole neighbors will definitely be warned.

And lastly kinaibigan ko yung mga kapitbahay mo para tulungan ka if somethings happen.