[chandraonline]

Yes. That is what I am guessing. If the app is opened close to the user's click, it might be fairly reliable. I think hasOffers and few of the other tracking companies do this. But I am sure branch has figured out a better way to fingerprint.

[jonahx]

I thought the IDFA could be used to do tracking like this, or am I misunderstanding something?

http://www.adexchanger.com/mobile/apple-throws-a-bone-to-app...

[maephet]

The IDFA has been blessed for this. All of our partners have been submitting their apps with that option checked without issue.