Apple Rejecting Apps Using Cookie-Tracking Methods, Signaling Push To Its Own Ad Identifier Technology Is Now Underway

Mobile app developers using a technology called "cookie tracking" (sometimes called "Safari flip-flop" or "HTML5 first party cookies") are starting to have their apps rejected by Apple's App Review team, we've heard from a few different industry sources.?With this method in place, Safari is opened upon first launch in order to read a cookie that may exist there from a user's past interactions with ads. In terms of the user experience, it's not ideal,?but it is one some app makers are utilizing?as an alternative to the deprecated UDID? - the unique device identifier which?Apple first announced plans to phase out?back in mid-2011.

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