I’m looking for more information on how exactly specifying the intent in the manifest when querying activities helps with the issue mentioned with security, namely
In the past, scummy apps would abuse the ability to query for apps in order to “fingerprint,”
or uniquely identify, the device. Those apps could then use that fingerprint to track that device across apps.
Say I have a scummy app, won’t I be able to still do the query in question if I add the intent in XML (and possibly many other intents) in the manifest?