iOS 10: Update to SDK 4.9 & fingerprinting usage

[Visit adjust.com] Updates for iOS 10 Apple's iPhone launch event started at 9am this morning, and among the announcements are the final details for iOS 10 which will be released on September 13. One of the things that will change is that the IDFA will be set to all zeroes when the Limit Ad Tracking toggle is enabled. The IDFA is frequently used for attribution on iOS, so how will adjust adapt? adjust will automatically fall back to fingerprinting when the IDFA is not available. Now, there are two things you should be aware of: - first, we highly recommend an update to SDK 4.9, as this resolves an issue where a small minority of users may be overcounted upon reinstall. - second, users with Limit Ad Tracking enabled can not be attributed to campaigns with partners that do not support fingerprinting, which we will use as a fallback. The first problem is resolved through [adjust iOS SDK 4.9]. The update allows adjust to deduplicate installs but without replicating the functionality of the IDFA or infringing on the user's preference as stated through the Limit Ad Tracking toggle. The overcounting may happen, specifically, if a user re-installs your app (with SDK 4.8 or below) and has Limit Ad Tracking enabled. This action may be interpreted as a new install. We expect the effect to be minimal and primarily affect your organic install numbers. If you update to SDK 4.9, the overcounting can be avoided altogether. What does this mean for you? Update the SDK to 4.9 as soon as you are able. As for the second problem, we are in constant dialogue with those that we call our "API partners". These are ad networks and premium publishers that do not redirect users to third-party tracking solutions on the click - instead, they expose an API that allow us to work together on attribution. These APIs universally require the IDFA. There is currently no way to attribute users with Limit Ad Tracking enabled to campaigns run with these API partners. Users with Limit Ad Tracking enabled on iOS 10 can not be attributed to campaigns running on: - Facebook - Twitter - Google Adwords, including Youtube, - DoubleClick, - video and retargeting networks that rely on IDFA to send server-to-server clicks. Many ad networks allow you to attribute over fingerprinting, for example by redirecting users to adjust's tracker URLs directly. What does this mean for you? Ask your partners to support fingerprint-based attribution. Roughly 13 % of all users that we currently observe have Limit Ad Tracking toggled on. --------------------------------------------------------------- ​ [adjust] adjust Headquarters, Saarbrücker Straße 38a, 10405 Berlin, Germany San Francisco · Istanbul · Tokyo · Shanghai · Beijing Sydney · Paris · São Paulo · Singapore · London [www.adjust.com] | [contact@adjust.com] Jurisdiction | Local Court Berlin-Charlottenburg: HRB 140616 Represented by Christian Henschel and Paul H. Müller This email was sent to: [{EMAIL}] If you don't want to receive more of these, [click here to unsubscribe...]