Last week I wrote about how some (perhaps) rogue apps use your microphone to listen for subsonic signals coming from your TV or laptop to tell advertisers what you are watching or viewing.
You can stop this from happening by denying those apps permission to use your microphone. Here’s what you do.
On iOS (iPhone or iPad)1 open the Settings app and scroll down to Privacy. Touch that, then you’ll see this:
Select Microphone and you’ll see a list of apps that use the Microphone. Here’s mine (somewhat edited):
Slide the on-off switch to the right to deny the app access to the microphone. And the next time you install a new app and it asks you whether to allow it access to your mike, think before you click.™
1 This process is generally similar on a Droid, but may vary depending on version of the operating system.