Surely the solution is fairly simple. You put an RFID tag on the car and an RFID tag on the vehicle. If they don't match then you have a problem... Put it somewhere it cant't be easily modified - link it with the ECU/immobiliser or something. Break/change the chip, car stops working.
Of course this does require twice as many RFID tags!
Surely a great number of possibilities exist. Put an RFID scanner in the car, connected to the ECU. When you start the car it looks for its numberplate, a chassis ID code, the key, the alarm etc. Car thieves are often clever, but the opportunist tends not to be a hardware/software engineer. It would require some pretty significant hacking to get round a security system like this. It could also be used to prevent the trade in stolen parts - cars stolen, broken down and parts sold on.
Mind you that might be a bit risky - I can see a WGA type situation where changing a part of your car inspires a message along the lines of "You appear to have significantly changed your cars configuration. For your own security we have immobilized it. Please return it to your dealer to have it reactivated".
(Hell yeah, a car situation explained using a computer analogy!)
I might be wrong, radio comms stuff is not a strong area of mine, but I thought the intention of numbers such as these was to provide a view of the efficiency of the system. For example a QAM system gets 4 bits per cycle, 64-QAM gets, well, 64 (I think it's used in DVB broadcasts in the UK, don't know about elsewhere).
As the amount of information per cycle goes up, the risk of noise and corruption increases, since they have a more significant effect on the signal. Seeing as there is usually a fixed frequency band to work with, then it is necessary to increase the number of bits/cycle in order to increase the throughput.
It sort of reminds me of the clocks per instruction measure for cpus.
There are a good few wooden houses in England, they are often a few hundred years old though... all those posh barn conversions you see tend to be mainly wooden. A lot of the houses in historic villages are wood framed as well. The house I'm in was built a few years ago, and is wood framed (but has a brick exterior which may not actually be structural). The difference between it and my parents house, which is definitely made of bricks and mortar is that if someone slams a door here, or plays some loud music, every wall in the house vibrates. You can hear conversations in the next room easily. To me it doesn't feel as solid, which I don't like.
However my grandparents old house, which is a centuries old farmhouse is mostly wood framed (again with some brick exterior), which creaks and moans, and has some fairly uneven floors upstairs where things have moved over the years feels perfectly solid to me. Mind you, to last as long as it has I suppose it has to be. I don't think there are any 1.5'x2' oak main beams in my current house. I concur with the comments that houses are being built on the cheap, there are loads of little details in the current place which suggest it was rushed, and mistakes which do not seem to reflect centuries of experience in house building.
Seeing as most people pick up wireless networks from their neighbours etc, are they going to ban people who live near schools from having APs? Big signs up near schools telling people to disable the wifi in their laptops? The whole thing is entirely pointless.
Also hope that teacher has been to a doctor, sounds like he needs his head checked, or he really hates his job and hasn't realised yet...
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Surely the solution is fairly simple. You put an RFID tag on the car and an RFID tag on the vehicle. If they don't match then you have a problem... Put it somewhere it cant't be easily modified - link it with the ECU/immobiliser or something. Break/change the chip, car stops working.
Of course this does require twice as many RFID tags!
Surely a great number of possibilities exist. Put an RFID scanner in the car, connected to the ECU. When you start the car it looks for its numberplate, a chassis ID code, the key, the alarm etc. Car thieves are often clever, but the opportunist tends not to be a hardware/software engineer. It would require some pretty significant hacking to get round a security system like this. It could also be used to prevent the trade in stolen parts - cars stolen, broken down and parts sold on.
Mind you that might be a bit risky - I can see a WGA type situation where changing a part of your car inspires a message along the lines of "You appear to have significantly changed your cars configuration. For your own security we have immobilized it. Please return it to your dealer to have it reactivated".
(Hell yeah, a car situation explained using a computer analogy!)
I might be wrong, radio comms stuff is not a strong area of mine, but I thought the intention of numbers such as these was to provide a view of the efficiency of the system. For example a QAM system gets 4 bits per cycle, 64-QAM gets, well, 64 (I think it's used in DVB broadcasts in the UK, don't know about elsewhere).
As the amount of information per cycle goes up, the risk of noise and corruption increases, since they have a more significant effect on the signal. Seeing as there is usually a fixed frequency band to work with, then it is necessary to increase the number of bits/cycle in order to increase the throughput.
It sort of reminds me of the clocks per instruction measure for cpus.
Surely a bird with long legs...
There are a good few wooden houses in England, they are often a few hundred years old though... all those posh barn conversions you see tend to be mainly wooden. A lot of the houses in historic villages are wood framed as well. The house I'm in was built a few years ago, and is wood framed (but has a brick exterior which may not actually be structural). The difference between it and my parents house, which is definitely made of bricks and mortar is that if someone slams a door here, or plays some loud music, every wall in the house vibrates. You can hear conversations in the next room easily. To me it doesn't feel as solid, which I don't like.
However my grandparents old house, which is a centuries old farmhouse is mostly wood framed (again with some brick exterior), which creaks and moans, and has some fairly uneven floors upstairs where things have moved over the years feels perfectly solid to me. Mind you, to last as long as it has I suppose it has to be. I don't think there are any 1.5'x2' oak main beams in my current house. I concur with the comments that houses are being built on the cheap, there are loads of little details in the current place which suggest it was rushed, and mistakes which do not seem to reflect centuries of experience in house building.
Seeing as most people pick up wireless networks from their neighbours etc, are they going to ban people who live near schools from having APs? Big signs up near schools telling people to disable the wifi in their laptops? The whole thing is entirely pointless. Also hope that teacher has been to a doctor, sounds like he needs his head checked, or he really hates his job and hasn't realised yet...