How to detect which 3rd sdk use UDID?

Question

We use a lot of third-party SDKs from ad providers, and since Apple will not allow UDID access after May 1st, I want to check which SDKs use the UDID function. Is there a simple way or tool to do that?

Answer 1

One simple and naïve method is to run strings and grep on the library files. i.e.

strings libSomething.a | grep uniqueIdentifier

If you see any line that prints exactly uniqueIdentifier there is a risk they call it. This method is not 100% bullet proof. But I'd expect Apple doing a similar check in their automatic validation.