I'm about to make a little beta test for my iOS project. A few people will send me their UDIDs, I will add them to my distribution provisioning profile, then upload a build containing such profile for them to install through iTunes.
I have heard that a non-tester, whose UDID is NOT in the profile of my build, is still capable of installing the .IPA I upload. Probably with a jailbroken device, Cydia or something like that.
Is there a way to avoid this? To truly limit the installations to specific UDIDs, even against jailbroken devices?