How is the analysis of the interests of mobile application users technically implemented?

Question

Analytics

Hey! I can not find comprehensive information about how information is technically collected on the interests of users in a mobile application. For the desktop and mobile web, the methods are clear: cookies, evercookies, local storage, digital fingerprinting, transparent tracker pixels, etc. (if anything is missing, please fill me in). But how does this happen in a mobile application, given that at the moment many applications do not even require authorization from the user to work in it.

Answer 1

Read in the direction of how in-app analytics works, for example. Appsflyer and others.
Based on a number of identification features, the user is assigned an internal ID, event- and data-driven analytics are sent through it, all this is linked in the session and beyond.
Technically, this is not much different from the same cookies, with the only difference being that in the case of a mobile application, the setting point for this cookie is not the launch of the application, but install (or even download).
Everything is exactly the same: a digital print, pixels and tracking actions, and so on.