Digital Advertising Accountability Program, issued compliance warning to advertisers regarding device fingerprinting. Under DAA guidelines, companies need to provide notice and consent when using Cross-App Data for certain purposes including for interest-based advertising.
On June 3, 2021, Google informed app developers that beginning in late 2021, when Android 12 OS users opt-out of personalized ads, the advertising ID provided by Google Play services will not be made available to app developers for any purpose.