Connect with us

Inaudible transmitter

Discussion in 'General Electronics Discussion' started by virtualcircus, May 17, 2013.

Scroll to continue with content
  1. virtualcircus


    May 17, 2013
    Hi everybody,
    today I discovered Shopkick app which is using 21 KHz sound to deliver digital signal from sensor to smartphone. I would like to try it but I have no experience with digital sound modulation. Is possible to make it via two smartphones? How can be possible to deliver different signals for each store?
    Thanks for any advice.
  2. davenn

    davenn Moderator

    Sep 5, 2009
    have you got a reference page link to that app so we can see what you are referring to ? ...

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day