Many of us feel a deep personal connection with our iPhones, and small wonder: the average person’s smartphone knows more about them than their spouse or significant other. Our iPhones hold our contacts, photos, videos, music, banking data, texts, emails, voicemails, web logins, apps and more. We use our phones to pay our bills, send texts to our girlfriends, check-in to our favorite club, play games with friends, and much more besides.
That makes our iOS devices a juicy target for tracking, and what most people aren’t aware of is that, historically, Apple has made it very easy to anyone to tell what you do with your iPhone. It’s called a Unique Device Identifier or UDID. Every iOS device has one, and using it, third-parties have been able to put together vast databases tracking almost everything you do with your iPhone, iPod touch or iPad.
The good news for privacy advocates is that the days of UDID are numbered. Following the recent stink the U.S. Congress raised over how iOS apps handle a user’s personal information without permission, Apple has given an ultimatum to third-party App Store developers: either stop tracking UDIDs or get kicked out of the App Store. Now ad networks and developers are scrambling to agree on a way to track your device in the future.
But are these replacements any good, or do they pose even bigger privacy concerns than UDIDs did?