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Who did? UDID! Apple to stop accepting apps that access UDIDs on May 1st

Posted: , by Alan F.

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Who did? UDID! Apple to stop accepting apps that access UDIDs on May 1st
Apple's developer site has a message for those writing new apps or updates to current apps for iOS. "Starting May 1, the App Store will no longer accept new apps or app updates that access UDIDs. Please update your apps and servers to associate users with the Vendor or Advertising identifiers introduced in iOS 6."  UDID stands for Unique Device Identifier that each iOS device has and consists of a 40 character string.

UDIDs were meant to be anonymous, but developers use them to keep track of the usage of their apps and to help target advertisements. The problem is that with a little more data, UDIDs can be traced back to a specific user. In fact, back in 2010 a study showed that 68% of the top apps in the App Store transmit the UDID of each device that downloads it. One app, CBS News, also transmitted the user's name along with the UDID.

Apple replaced the UDID with the Advertiser Identifier which can be disabled by the user

Apple replaced the UDID with the Advertiser Identifier which can be disabled by the user

Worried about the lack of privacy involved with UDIDs, in late 2011 Apple decided to stop accepting apps that used them. Last September, the Cupertino based tech giant replaced UDIDs with the Advertiser Identifier which users can change or opt out of. When the May 1st deadline arrives, the new Advertiser Identifier will have been out 8 months, enough time for developers to figure out how to use the information to track their app.

Besides rejecting apps for UDIDs, Apple is said to be looking to turn down apps not optimized for a Retina display. Additionally, apps for the iPhone must be written for the 4 inch screen of the Apple iPhone 5.

source: 9to5Mac via GIGaom

7 Comments
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posted on 21 Mar 2013, 20:27 6

1. techguy22 (Posts: 226; Member since: 09 Aug 2012)


love the freaking tittle. anyway, as i said on engadget. i think google should do the same thing. force all devs to use holo UI and add tablet mode. too many apps looking like crap on the play store.

posted on 21 Mar 2013, 23:02 2

2. cmikeh2 (Posts: 25; Member since: 09 May 2012)


Not only are there a lot of crappy apps, the really good ones don't get the recognition they deserve. I generally will search through about a hundred results during a search to make sure I don't miss some gem that no one can find amid the muck.

posted on 22 Mar 2013, 07:47

5. spideyhead256 (Posts: 148; Member since: 05 Nov 2012)


true that.there are some really great apps on the play store which are overshadowed by their crappy-looking counterparts.

posted on 22 Mar 2013, 13:16

7. V3TTOO (Posts: 26; Member since: 29 Nov 2012)


I agree with you techguy22, Google needs to do the same thing when it comes to the OS ecosystem. I like that Apple wants their apps to match the OS updates, and not focus on the older devices. I am a Google fanboy, but the fragmentation in Android is horrible for development, since you have to not only build a Jelly Bean and Ice Cream Sandwich app, but also a Honeycomb and Gingerbread app. Sometimes even a Froyo version for those that have not recieved an update from the manufacturer/carrier.

posted on 22 Mar 2013, 04:04

3. Fuego84 (Posts: 250; Member since: 13 May 2012)


The whole article is bad news.

posted on 22 Mar 2013, 06:30

4. platformwars (Posts: 59; Member since: 14 Sep 2012)


I dont understand the app development process here.. i mean.. in android the apps are same for all the screen sizes(Except Tablets i suppose).. I have a 7" Samsung tab along with HTC Desire HD, HTC One X and Google Nexus 4 and all the apps seem to run fine on all the devices.. if a developer has to develop an app based on the screen size then it should have been a nightmare for android developers since it has multiple screen sizes.. if android doesnt have a problem with this... then why does apple?

I dont want to start any wars here.. but just trying to understand the difference.

posted on 22 Mar 2013, 08:52 1

6. dragonscourgex (Posts: 307; Member since: 16 Jan 2012)


"I dont want to start any wars here"....your name is "platformwars" :P

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