http://www.thebitbag.com/apple-updates-itunes-connect-requires-developer-compliance-to-ad-identifier-rules/73866 Can someone help me make better sense of this? Thank You

In a nutshell, Apple 'used' to use what was called the 'UDID' to identify a device. However, it was found that you could (after some time and tracking) obtain bits and pieces of personally identifiable information that could reveal the actual user identity. Bad juju. Advertisers 'were' using the UDID in their ad tracking scheme, to 'target' ads to users. Apple has revised this practice, doing away with the UDID, and replacing it with the "IDFA" (aka IFA) which is the 'IDentifier For Advertisers', a similar scheme, but harder to tie any device to a particular 'user', and also includes some user options to "Limit Ad Tracking". You'll still get ads, but not 'targeted' ads. This change is primarily for advertisers, like RevMob, or that kind of thing. I don't 'think' it affects us as developers, other than if serving up ads 'locally', adhere to new IDFA use rather than old school UDID use. Hope that helps! Cheers! -- Smug

Ok I understand now.thanks! Does admob use That tracking method?

Genuinely not sure. But anyone still using UDID will not be doing so for long, heh. I would 'hope' that if you're signed up for anything needs changing, they would advise you of the change, and provide whatever the developer needs to do (like recompile, new SDK, or something to accomodate the changes). But I don't use those types of services, so I haven't heard or seen anything on it, and probably won't. Cheers! -- Smug

I think Google(Android) Admob was the first to start using that kind of tracking method few weeks back...

Yea I only use ads on android but I was curious since they use that for defense.there's also a lot of people I know that use admob in ios.in sure they will update the sdk