Due to the new Apple guidelines we are forced to remove UDID. I've found the OpenUDID and SecureUDID solutions. OpenUDID fails in ios4.0+ so I went into SecureUDID (1.1 branch).
Does anyone else have commited apps with those two alternatives? Are they adequate to replace UDID?
SecureUDID works and has shipped in many apps. Most recently, last night, it shipped with Path 2.1.1 using both Crashlytics and SecureUDID technology.
Hope that helps!