laser diffuser

[DucatiGary]

ok, lets say somones bought a car, with laser diffusers already fitted but wasent told about it?

what is the legal stance on this?

is it down to seller or purchaser to omit liability ?

just curious, my cars aint got any illegal equipment on them but the car i am looking to buy "might" be one that would be already fitted with such a device.

Thanks

[parrot of doom]

Well, its a bit like buying a car with a rocket launcher on it. Its still a bit illegal.

[Splodge S4]

But there are still no laws to say your not allowed to have one fitted or even switched on, the only time an 'offence' has been committed is when your shot with a laser & it jams, preventing plod from doing his job.

I'm still trying to find out how it can be used to open a garage, any one know?

[_dobbo_]

If you have an automatic garage door opener, it receives the signal from your car and opens as you approach.

[smeggy]

Splodge S4 said:

I'm still trying to find out how it can be used to open a garage, any one know?

Using a jammer to trigger a garage door opener is relatively easy. Using a garage door opener as a jammer is much more difficult. There is this......

http://tinyurl.com/9wpuz

(www.target-automotive.nl/wcms.php?wcms[id]=84)

.......but the gulf of difference of functionality between this and a kosher garage door opener is so great that I reckon it's relatively easy to prove intent of jamming, if it were to go to court (likely if caught with it).


I’ve done some research on Lidar speed traps recently and I’ve learnt quite a lot. Lidar systems have decent jammer rejection capabilities; only circuits specifically designed to jam will succeed (as well as really really bright incandescent headlamps).

[smeggy]

_dobbo_ said:

If you have an automatic garage door opener, it receives the signal from your car and opens as you approach.

The non-kosher variety (as per the link in my previous post) will be automatically triggered from a permanent emitter located at the garage

[splodge s4]

smeggy said:

_dobbo_ said: If you have an automatic garage door opener, it receives the signal from your car and opens as you approach. The non-kosher variety (as per the link in my previous post) will be automatically triggered from a permanent emitter located at the garage

ok so it seems the frequency or what ever it is that it picks up is the same for the diffuser & the receiver for the door with no alterations? Just thinking if you buy a 4 in one remote for the tv you have to get the right one or nothing happens, is it the same for this?

[smeggy]

splodge s4 said:

ok so it seems the frequency or what ever it is that it picks up is the same for the diffuser & the receiver for the door with no alterations? Just thinking if you buy a 4 in one remote for the tv you have to get the right one or nothing happens, is it the same for this?

Lidar systems use a simple pulse format: very very short, regularly spaced pulses (I answered my own questions Declan )

The pulse format of a remote control is a little more complex as it also transmits a code specific to the intended recipient/appliance (as well as for each command). Also, this pulse train will be modulated onto a carrier (~33khz) for easier detection at the receiver.

I don’t know what pulse format the non-kosher door opener uses; perhaps it has two: one for door opening (triggered by the permanently emitting source acting like a TV remote), the other for jamming (triggered by lidar pulses). Perhaps the designers have cleverly made the door emitter act like a Lidar transmitter, but I doubt that because the literature states that is has 50 unique codes.

[DucatiGary]

but surely if someone bought a car with a hard wired device fitted, that has no speacial switch, it could be anywhere?

and the seller should have to tell the buyer that it is fitted ?

as the buyer, is not breaking the law by fitting, just buying a car and could ultimatly be sent to jail for unknowingly buying a vehicle that has a laser diffuser fitter.

surely this is just common sense ?

[pg53]

smeggy said:

stuff about non-kosher door opener

I've just had a look at that interesting gadget and to me it seems the 'ambiguous' use of it is limited to it being a detector only, not a jammer. Although it responds to the garage door transmitter signal with its own reply, it specifically states that it switches off when it receives a speed detection laser, just emitting an audible warning. . .also the whole tenor of the blurb - 'know what's out there' and also the recommendation to fix it behind the number plate . . .

[catso]

pg53 said:

it specifically states that it switches off when it receives a speed detection laser, just emitting an audible warning. . .

It switches off after 5 seconds which is time enough for it to 'realise' that the signal is not the door opener (or to allow you to slow down sufficiently to not get 'scammed')

[catso]

DucatiGary said:

but surely if someone bought a car with a hard wired device fitted, that has no speacial switch, it could be anywhere? and the seller should have to tell the buyer that it is fitted ? as the buyer, is not breaking the law by fitting, just buying a car and could ultimatly be sent to jail for unknowingly buying a vehicle that has a laser diffuser fitter. surely this is just common sense ?

What if one was to buy it to open one's garage door and was not aware of any other 'uses' or 'side effects'. I mean if you read the advertising for what it claims to be; could happen, probably has.....

[_dobbo_]

catso said:

DucatiGary said: but surely if someone bought a car with a hard wired device fitted, that has no speacial switch, it could be anywhere? and the seller should have to tell the buyer that it is fitted ? as the buyer, is not breaking the law by fitting, just buying a car and could ultimatly be sent to jail for unknowingly buying a vehicle that has a laser diffuser fitter. surely this is just common sense ? What if one was to buy it to open one's garage door and was not aware of any other 'uses' or 'side effects'. I mean if you read the advertising for what it claims to be; could happen, probably has.....

Unfortunately ignorance is no defence and because it's such a heinous crime, even if completely unaware of the effects of the device you would likely lose your car, home, and freedom.

[Eliminator]

Not a defence, but should be somthing to take into account - mitigating circumstances.

[_dobbo_]

Eliminator said:

Not a defence, but should be somthing to take into account - mitigating circumstances.

Ah, but that's in a world where the motorist is not enemy number one. I honestly think if you get caught with one of these things you are doomed. Even if you are telling the truth, will a magistrate believe you didn't know about a device which happened to stop you from getting caught by a laser trap? And you also drive a fast car? I think not.

Much better off beating up some old ladies and robbing your neighbours if you want to get away with something

[pg53]

catso said:

It switches off after 5 seconds

oh yes, I missed the implications of that bit! In fact after another look, seems like it can be adjusted for a longer delay too.