Re: I can't say I understand this 100% (Score: 3, Informative)
by zocalo@pipedot.org in Keyless entry fobs result in rash of vehicle thefts on 2015-05-12 07:46 (#8W7M)
There's an assumption here that the key fob only has a range of 30cm - are we sure that's the case? I don't have one of these specific systems, but I do have a remote fob for my car and it's good for tens of meters (I've not tried to establish the max range), which is mostly intended for stuff like turning on the AC to start to cool a hot car. Perhaps the system works by having the same type of fob with the added functionality of a receiver - when it receives the weak signal from the car, perhaps it just sends the regular high powered "open door" signal in response. You might still need a high powered receiver to pick up and boost the fob signal if it's far away, but it does resolve the 30cm:30cm problem.