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UDID is now UDIDon’t

There’s been a lot of rumors going around lately that Apple is rejecting applications that send out device UDIDs but there’s not been any direct confirmation from Apple that this is a new policy. Well this morning we just got that confirmation in the form of a rejection.

Rejected

Now this isn’t a particularly big deal for us since we already had code in place, for Tweetbot 2.3, that removes the need for UDID. It was a simple matter of moving that code back into 2.2 and re-submitting to Apple. We had a fixed version updated and uploaded to Apple within 2 hours of getting this message and are once again waiting for approval. If you are an app developer and depend on UDID for any functionality it’s time to migrate away from it, sooner or later Apple will catch you.

Why did we use UDIDs? We used them only for our push notification services in order to be able to match up a given device to its push notification settings. This allowed us to restore push notifications settings after Tweetbot was deleted and re-installed. With this new change in place this is no longer possible, if you delete and re-install Tweetbot you’ll have to setup your push notification settings again. Your device’s UDID never went anywhere besides our push notification services and has never been shared with anyone.