Home Defense Options.

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Security cameras. Get an old pc, load linux on it, download a program called zoneminder, get a tv pc card for 20$, hook it up to the tv in your room, get a bunch of old webcams, or even some nicer cameras off of ebay/amazon, the linksys DCS-3000, has 2 way audio so you can talk to an inturder etc. Cost is under 400$ for everything depending on how many cameras you want, I have 3, one watching my downstairs door, one on the hallway, and one in the gangway to keep an eye on my apartment. i can even check in on things over the internet. Its also got motion detection and a way to hook up an alarm. Along with a shot gun with fingerprint trigger gaurd and a cellphonoe to call the police you should be pretty secure.