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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