keep your keyless fob in a metal box my friends car was broken into

Yes you have to assume that there's a known maximum range that the fobs will work at, and latency introduced by repeaters is going to increase this, so at some point the latency between the car and fob will be "hang on a minute physics says it's not possible for 200 metres of latency to be present on a short-range link" - but it's likely to require more power than a key fob can provide.

Regards timing I was more talking about how the radio transmissions are clocked, there will be variation between each fob just due to manufacturing tolerances on the components, which could be used to build a fingerprint of the actual radio doing the communicating providing the car was able to access all that information rather than having it stripped away and just having the data presented to the systems that handle security. It's not software-upgradeable in any case.
 
Don't forget if you use a special pouch or something to stop the signal, they will break into your house instead....
 
it would be nice also if you could immobilise your car remotely via your phone say, and or be able to get alerts/push notifications if it starts up while not in proximity to your phone

There are systems out there like this (a lot of GTR owners put them in).

You can set up a GPS fence to turn the car off/send you a text when it leaves this area, and then you can send a text to turn the engine off and stop it being restarted, obviously this is horribly illegal in the UK interfering with a running vehicle, but there are options out there...
 
I just want a car with remote central locking. I have no issues putting a key in a slot and turning it to start the car, all the keyless stuff can jog on. Unnecessarily complicated for me.
 
Oh god, we've been GD'd! :(

Could this thread be merged with the existing one on the subject?
 
I love the replies of putting them in a biscuit tin or other metal boxes or spending £10 on those stupid faraday bags that are apparently selling by the bucket load on Amazon.
Why the hell should you have to do any of that :confused: it’s 2017 for goodness sake if you come home after a long day in work and want to just throw your keys down or leave them in your coat pocket by the door ready for the morning you should be able to without worrying about going to get your bloody biscuit tin or taking the batteries out every night etc.
And we are talking expensive cars here it’s not just happening to cheap runabouts there’s 60k Range rovers and Mercs etc being taken in under a minute but as someone stated the car manufacturers are not bothered because they are technically selling more cars when the insurance buys you a replacement. This is why Insurance is sky high for everyone at the minute.
People laugh about the 80’s when you could take Fords etc with a wire coat hanger or someone else’s key but at least that required some effort unlike just opening the door of a new 30k car and pushing a button to steal it. It’s never been so easy for thieves.
 
I actually hired a couple of big fords in LA a month or so back, (Expedition, and F150) and both of them did actually have a small num pad on the door, that you can use for keyless entry;

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I'd never seen it before, but it seemed like a pretty good idea - convenient, and certainly more secure than having a fob that's endlessly broadcasting an signal that says "open door plz"

Yeah there’s a few over here, that’s why I mentioned it. I think the convenience is more for the times you don’t have a key at all, but it seems a good idea. Remains to be seen how often it’s used!

This is why a garage is useful!
 
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I took 4 types of anti static EMF bags to try in the parking lot for a non scientific test with my mazda 3 MPS BL (it's close to a Polo GTI in performance so I need to make sure it's secure!). It seemed to do nothing. I'm dubious a packet of quavers or a metal tin will do much.

I also googled EMF stuff for a bit and ended here: http://www.lessemf.com/fabric1.html. Get your tinfoil hats on!

A proper tin should work as it surrounds the transmitter with a material that the radio frequencies cannot pass through*, anti static bags however are not designed to stop radio frequencies but dissipate electrical charges, which is a very different task.

If you want to test how well something is going to work you could put your mobile in the tin and try ringing it/see if it's available on your wifi network, or the receiver for your doorbell, the same goes for the keyless fob for a car..


*A little like the metal grill in the Microwave door, except that the microwave grill is made to allow visible light through whilst stopping microwave frequencies.
 
Don't forget if you use a special pouch or something to stop the signal, they will break into your house instead....

Well, no they won't, they are car thieves not burglars, crims want an easy life and are lazy, cowardly *****, planning a house break in needs a bit of brain power, is risky and way too much effort.

BTW How will they restart the car after the initial start -up, the car is miles away but the remote is still in the owner's kitchen ?
 
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