FixableWho's tracking you online
Your mobile advertising ID
A single ID that ties your whole day across apps to an advertiser’s profile.
Understand it
Every phone carries an advertising ID - a unique tag apps and advertisers use to join up everything you do: the apps you open, roughly where you go, what you buy. A phone that visits home, work, a clinic and a place of worship is not anonymous. You can reset or delete the ID in a few taps.
How to spot it
You won’t see it working - it’s silent. Assume it’s on unless you have turned it off.
Close the gap
- Delete or reset your advertising ID - see the harden-Android and harden-iPhone guides.
- On iPhone, turn off “Allow Apps to Request to Track”.
- Turn off personalised ads in your Google or Apple settings.
- Give apps “while using” location, and precise location only where it is needed.
What to do about it
This is part of your plan at the High-risk level - Harden your devices. Work through it there and you’ll close this off along with everything else it covers.