i tried to find out if the new Advertising Id from Google is unique per device or per google account? In general i would like to know what happens if someone has two devices connected with the same google account?
Same Question for the iOS IDFA.
Thanks in advance
As I look into developers page, I understand that Ads ID is user-specific unique (so unique per user not per device)
The advertising ID is a unique but user-resettable string identifier that lets ad networks and other apps anonymously identify a user. The user's advertising ID is made available to apps through APIs provided in Google Play services.
Regarding iOS, as I checked reference, this is device-specific unique
An alphanumeric string unique to each device, used only for serving advertisements. (read-only)