Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

Myth buster?

The signal from a FOB for a car door opener, getting transmitted over a cell phone???

I maintain the signal from the FOB is a radio wave signal, thus, it will not transmit via voice on the cell phone to open a car door from a remote location. A.K.A. Lost my keys, car's locked, called home on my cell to the wife with the spare keys and fob. I hold my cell next to the car, she hits the fob from home and the car doors unlock. I think not!

Opinions and experiences please...

3 Answers

Relevance
  • Anonymous
    1 decade ago
    Favorite Answer

    You are correct. A car door remote emits a radio wave not a sonic wave. Otherwise random sounds would be unlocking peoples' car doors all the time.

  • 1 decade ago

    While it's a very interesting concept, it is in fact false. I can see something like this getting started due to OnStar, but this is not the way they unlock people's doors.

    Even if it was sonic, there's a good chance it wouldn't work simply due to distortion cause by the actual transmission. Additionally, it would have to be a subsonic or supersonic (above or below the range of human hearing) to be used, and these may or may not even transmit over a phone.

    But it'd make a great story for someone...

    Best of luck to you in the future!!!

  • Anonymous
    1 decade ago

    You are exactly right. Here's a couple of links to back that up, too:

    http://www.snopes.com/autos/techno/keyless.asp

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

Still have questions? Get your answers by asking now.