the Detroit system sounds badass, one way to bypass it, although illegal, would be cell jammers. I wouldn't recommend it, as getting caught with one while trespassing would likely get you more charges added.

One difference with motion sensing via cameras as opposed to actual motion sensors used in alarms, is in my experience, any shadow/ animal/ etc, can set the camera's motion sensor off, whereas the infrared ones go off of heat, and can be set to ignore small disturbances, like animals. Some camera systems can actually use the IR type of motion sensors, and most new DVRs have inputs for various sensors, be it a door switch, IR motion, etc.

Posted by DSomms Yea those videofieds in the old Detroit Public School buildings are pretty simple to get around. If you are unsure if a system is operational, follow the established protocol and you will literally never get caught. Since I learned all about the cameras, I've been in roughly 50 vacant DPS properties and only caught once and it was a fluke because a neighbor called and they actually responded.

not a fluke! when you play the odds, the odds eventually play you.
thats how the world works man

Posted by R3d not a fluke! when you play the odds, the odds eventually play you. thats how the world works man

That's where the risk:reward ratio comes in. Unless there's architectural significance, I don't really care anymore. Kinda jaded about the schools now. They're all empty and we've been in almost all of the really old ones.

Posted by ThePhonedude the Detroit system sounds badass, one way to bypass it, although illegal, would be cell jammers. I wouldn't recommend it, as getting caught with one while trespassing would likely get you more charges added. One difference with motion sensing via cameras as opposed to actual motion sensors used in alarms, is in my experience, any shadow/ animal/ etc, can set the camera's motion sensor off, whereas the infrared ones go off of heat, and can be set to ignore small disturbances, like animals. Some camera systems can actually use the IR type of motion sensors, and most new DVRs have inputs for various sensors, be it a door switch, IR motion, etc.

They're PIR.





Here's the full spec sheet.

https://www.videof...01---JUN2013EN.pdf

Posted by DSomms Kinda jaded about the schools now.

cass tech was the last one worth a shit. i gave up schools and churches a long time ago for the same reason

Ok, if those are PIR, would be harder to get around, but not impossible.
The RF signal on those supposedly supports AES encryption, and is supervised, meaning if one of the cams stops transmitting, or the signal is blocked, it would likely generate a trouble code.

One way of taking out cameras is with a green laser of relatively high power, even a 500mW one will blind a camera temporarily, over a watt, and you can fuck up the sensor chip. Don't recommend this, as if it is monitored, you will definitely draw attention to yourself when the guard sees the screen go green white and possibly go out.

Posted by ThePhonedude Ok, if those are PIR, would be harder to get around, but not impossible. The RF signal on those supposedly supports AES encryption, and is supervised, meaning if one of the cams stops transmitting, or the signal is blocked, it would likely generate a trouble code. One way of taking out cameras is with a green laser of relatively high power, even a 500mW one will blind a camera temporarily, over a watt, and you can fuck up the sensor chip. Don't recommend this, as if it is monitored, you will definitely draw attention to yourself when the guard sees the screen go green white and possibly go out.

They also have tamper detection. There is a microswitch on the back of the circuit board that stays depressed while it's mounted on the wall. If the device is torn down, the switch releases and calls for help.

Our method for defeating this system has been very successful and is pretty simple. If we aren't sure if the cameras are operational, we do a quick run through of the building trying to trip as many devices as possible. Once we pass the first one, the 5 minute count down begins before we leave. We usually wear masks or scarves to cover our faces and wash out the cameras with our flashlights while they take their 10 second recording. Then we leave and park down the street and wait for a response from the DPS cops. It takes about 25 minutes on average from the initial trip. Sometimes more, sometimes less. If no response after 45 minutes, it is safe to assume the building is clear to explore.