OOT Life Tricks
11-24-2009
, 03:21 AM
11-24-2009
, 05:02 AM
11-24-2009
, 07:46 AM
11-24-2009
, 10:24 AM
Quote:
This is a technology that emergency personal use in non-metropolitan areas as a means of changing traffic signals for approaching emergency vehicles. I think the most mainstream version is called OptiCom. If you look at traffic signals you'll see small devices that look like this off somewhere on the beam. They are generally angled slightly downward.
The earliest versions of these only required several pulses of light at the correct frequency to trigger the device. Emergency vehicles would basically have properly tuned strobe lights (that were likely sold at a large premium) that would trigger the device. At this time they were easily exploitable. Phreaking manuals would reference a device called a Chrome Box which was a strobe light that triggered the opticoms in your city.
The manufacturers continued getting smarter and started requiring timed sequences of pulses, almost like morse code. Chrome Box plans were updated to instruct users to film approaching emergency vehicles with a camera and advance frame-by-frame to get the correct sequence of lights. It was also common knowledge at this point that cops knew about chrome boxes and would bust people using them. Hackers knew that most new sensors were designed for the IR level so they changed their designs. I think the cheapest way to modify existing boxes was with an IR gel.
I don't think much has changed wrt this technology since I looked at it 10+ years ago. At that time, I had a traffic light I could consistently get to change close to my house with my high beams. It was at the top of a decently steep incline so my headlights pointed almost perfectly at the traffic signal as I approached. I had greater than 50% success rate with changing this light as I approached the signal. I only cared if it changed when traffic was moving through the intersection on the cross street and if I was still far enough away that I hadn't hit the induction sensors.
This is the intersection in question in case anyone actually cares about this
google streets
I drove through this intersection at least once daily and tried it every single time for 1-2 years. if I was unable to trigger it on my drive up, my lights were no longer at an angle that would hit the sensor. In this case I'd slowly roll backwards over the induction sensor until it triggered it from having multiple cars.
The earliest versions of these only required several pulses of light at the correct frequency to trigger the device. Emergency vehicles would basically have properly tuned strobe lights (that were likely sold at a large premium) that would trigger the device. At this time they were easily exploitable. Phreaking manuals would reference a device called a Chrome Box which was a strobe light that triggered the opticoms in your city.
The manufacturers continued getting smarter and started requiring timed sequences of pulses, almost like morse code. Chrome Box plans were updated to instruct users to film approaching emergency vehicles with a camera and advance frame-by-frame to get the correct sequence of lights. It was also common knowledge at this point that cops knew about chrome boxes and would bust people using them. Hackers knew that most new sensors were designed for the IR level so they changed their designs. I think the cheapest way to modify existing boxes was with an IR gel.
I don't think much has changed wrt this technology since I looked at it 10+ years ago. At that time, I had a traffic light I could consistently get to change close to my house with my high beams. It was at the top of a decently steep incline so my headlights pointed almost perfectly at the traffic signal as I approached. I had greater than 50% success rate with changing this light as I approached the signal. I only cared if it changed when traffic was moving through the intersection on the cross street and if I was still far enough away that I hadn't hit the induction sensors.
This is the intersection in question in case anyone actually cares about this
google streets
I drove through this intersection at least once daily and tried it every single time for 1-2 years. if I was unable to trigger it on my drive up, my lights were no longer at an angle that would hit the sensor. In this case I'd slowly roll backwards over the induction sensor until it triggered it from having multiple cars.
hope all those idiots read this
11-24-2009
, 10:29 AM
11-24-2009
, 11:07 AM
11-24-2009
, 01:16 PM
11-24-2009
, 01:44 PM
Camping Tips
Buy a rolling work centre like the one below and fill it with all the cooking stuff you need for camping. If you leave it always packed, all you need to do when you go camping is throw it in your trunk and you're good to go! The top can also be used to prepare food on if you put a thin plastic cutting board on it.
http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053
To make real ground coffee on your campfire, bring water to a boil then dump your coffee grinds in it. Boil it again and take off heat. Do this once more then take the pot off the fire. Let it cool for five minutes and all the coffee grinds will sink to the bottom. Grind free coffee!
Buy a rolling work centre like the one below and fill it with all the cooking stuff you need for camping. If you leave it always packed, all you need to do when you go camping is throw it in your trunk and you're good to go! The top can also be used to prepare food on if you put a thin plastic cutting board on it.
http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053
To make real ground coffee on your campfire, bring water to a boil then dump your coffee grinds in it. Boil it again and take off heat. Do this once more then take the pot off the fire. Let it cool for five minutes and all the coffee grinds will sink to the bottom. Grind free coffee!
