![]() ![]() It’s important to note that while currently customers of one mobile measurement platform are at risk of having their app updates rejected, that doesn’t mean all the others are safe. I have reached out to both Apple and Adjust for comment. Theoretically, therefore, updating to the new Adjust SDK will render app updates possible for all Adjust customers. In all, the recent update involves 36 changed files with 44 additions and 622 deletions, according to GitHub. The update takes out code which accesses data like CPU type, how much memory a phone has, its charging status and battery level, and more. The change could reduce ad networks’ revenue by billions.Īdjust has updated its SDK, which is open source and publicly available on GitHub, in the last 14 hours. ![]() Before iOS 14, Apple’s IDFA (Identifier for Advertisers) was freely available without consent, and became the basis for measuring marketing and - frankly - tracking both devices and people. You could also use this data to potentially build a device graph which includes insights and history on every device your software interacts with.Īll of that is explicitly forbidden by Apple in iOS 14, where if you want to track people and devices you need to explicitly ask for and get permission - not unlike GDPR in some ways. Put it all together and you have something fairly unique - estimates on degree of uniqueness vary - that you can use to track who clicked an ad, who installed an app, and potentially more. ![]() A measurement company might, for instance, collect data on software version, time since last system update, time since last restart, location, time zone, and more: even things like battery status, charging level, and amount of disk space. ![]() (Full disclosure, I do some consulting for Singular, another mobile measurement partner.)ĭevice fingerprinting, sometimes called probabilistic attribution, uses a large amount of data about a device to identify it. Adjust says that it is trusted by “over 50,000 apps” on its website, and according to AppFigures, 18% of the apps on the App Store and 11% of the apps on Google Play that use attribution providers use Adjust. ![]()
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