can this be true

Gilgamesh

I just read this somewhere and was wondering if anybody ever tried it out

quote:

Good reason to own a cell phone: If you lock your keys in the car and the spare keys are home, call someone on your cell phone. Hold your cell phone about a foot from your car door and have the other person at your home press the unlock button, holding it near the phone on their end. Your car will unlock. Saves someone from having to drive your keys to you. Distance is no object. You could be hundreds of miles away, and if you can reach someone who has the other "remote" for your car, you can unlock the doors (or the trunk).

Editor's Note: "It works fine! We tried it out and it unlocked our car over a cell phone!"

Lord Nikon

Interesting stuff.

Gerry

You idiot.

declanoneill

http://www.breakthechain.org/exclusives/phonelocks.html

Seems to be BS.

Gilgamesh

kinda thought so, but hey, maybe someone actually did try this out at some stage

@Gerry, very creative

drdre

this is very interesting:D

did anybody actually try it?

Ernie Ball

We don't have to try it.

It doesn't work.

The transponder in your key does not work by emitting a sound. And your mobile does not transmit the radio signal emitted by the key. It transmits sounds (via radio waves, yes).

Gilgamesh

but a mobile phone can trasmit frequencies? at least I thought so.
I think I will give it a try on my flatmates car this evening, just out of curiousity.

Dades

Gilgamesh wrote:

I think I will give it a try on my flatmates car this evening, just out of curiousity.

Go on then - and report in the morning.

I wouldn't put my lunch money on it though!

jhegarty

Gilgamesh wrote:

but a mobile phone can trasmit frequencies? at least I thought so.
I think I will give it a try on my flatmates car this evening, just out of curiousity.

only sound frequencies... anything outside of that is compressed out ...

Zapho

Gilgamesh wrote:

but a mobile phone can trasmit frequencies? at least I thought so.
I think I will give it a try on my flatmates car this evening, just out of curiousity.

Phones do transmit frequency, every sound has a frequency! The key does work by transmitting a sound, but its frequency is above 125khz and phones are bandlimited to 3khz (landlines and mobiles) so it won't travel down the phone. The frequency of a human voice rarely passes 3khz anyway so there's no need for a higher bandwidth on a phone.

-Professor Zapho

Gilgamesh

thanks for that Zapho, seems to make sense, cheers

Zapho

Gilgamesh wrote:

thanks for that Zapho, seems to make sense, cheers

No prob!

Borzoi

Gerry wrote:

You idiot.

Normally for unwarranted abuse, I'd give you a weeks ban.

But seeing as you're a mod, with a lot of posts, you should definitely know better. See you in a week.

AMurphy

Zapho wrote:

.... The key does work by transmitting a sound, but its frequency is above 125khz .....
-Professor Zapho

Since when did Key Fobs transmit using soundwaves?.
They operate the same as any transmitter, using Electromagnetic Waves.

check here if you want some additional insight.
http://www.okwelectronics.com/

btw, I invented a golf ball with GPS and telemetery incorporated inside it, all internet accessible, so now it is impossible to brag about that 20 over par round (that normally shows up as 72 on the scorecard) at the 19th hole as your plays are being monitored live and available for all to see on the clubhouse monitor. It also monitors and reports those little lift and place events that normally go unrecorded.

But given i once saw a ghoast of whatever was being displayed on my PC monitor being displayed simultaneously on my TV, which was nearby, and I get a 2 sec forewarning on my car radio, in the form or interference, that my cell phone is going to ring. There may be some random EMF interference that may or may not randomly activate any adjacent receiver.

So any interaction or activity that may occur, benificial or otherwise, is happening at EMI level, not sound.

beller b

Silly Question? If your car has central locking...How the F*** can you be stupid enough to lock your keys in it?

ShockBlast RX8

ok sounds a little farfetched but it is posable to lock your keys in the car even if u need the key to unlock the car its called anti Hijack u try open ur car & it locks

stratos

rubbish.
You could use the mobile phone to break the window though.

AMurphy

beller b wrote:

Silly Question? If your car has central locking...How the F*** can you be stupid enough to lock your keys in it?

u drop them in through a small crack left open in the sunroof, or one of the windows. My 89 Camry has fobless central locking, but not on the boot, so I locked them in there once... actually twice.

viking

ShockBlast RX8 wrote:

ok sounds a little farfetched but it is posable to lock your keys in the car even if u need the key to unlock the car its called anti Hijack u try open ur car & it locks

My Stilo has a "deadlock" which means you can actually lock someone inside the car but they can't get out without breaking a window.

Its actually "supposed" to be used so that if someone breaks the window and gets into your car they can't open the doors to get back out again cos' they're deadlocked.

drdre

now i think its all rubbish but before i thought it was true:D

knifey_spoonie

im working in a garage so ill see if i can get someone to try it with me.Ill report back