Over the past few weeks, several ad networks have announced "UDID-independent" conversion tracking tools. As Apple's UDID ban has gone into effect, mobile advertising has had to find other ways to track device users.
The problem with this is, of course, that they're still tracking. Apple's SDK supports lots of ways to retrieve hardware data that's not limited to UDID, and it's easy enough to re-build the same UDID that Apple's APIs no longer support.
What's uncomfortable about this transition away from UDID tracking to other forms of user identification is how hard these firms are scrambling to keep tracking users. In a nutshell,
