How to Build Your Own Custom AirTags Posted by Sanuj Bhatia on Mar 05, 2021 in AirTags, How To At this point, we’re just tired of waiting for Apple to release its AirTags. Well, a team of researchers from TU Darmstadt University has taken things into their own hands and released an open-source project that can be used to build custom AirTags. Apple has taken forever to release the AirTags. Its first existence was found way back in 2019 when an asset of AirTags leaked in iOS 13.2 code. Since then, a lot of information about them has leaked, to the point that third-party accessories have already leaked online. Now, a team at TU Darmstadt University has reverse-engineered the protocol used by Apple devices to participate in Find My Network, called OpenHayStack. The team has also released free resources for those who would like to create their own set of AirTags.