With the announcement of iOS 11, Apple has introduced new security measures on their devices, either the blocking of ads or the ability to activate privacy options that the apps do not offer per se. However, it has also developed a new measure of protection that may sound suspicious.
This is DeviceCheck and allows applications to identify and track an iPhone, even when the user has decided to delete the app or even when the person using the phone is not the original user, but another person who has purchased it. That said, sounds like what Uber tried to do behind the backs of Apple and the users themselves to spy on them and know who was taking advantage of the promotions of the company.
Apple, however, seems to have raised this device tracking taking into account the privacy of the user, as developers of apps that activate DeviceCheck can not know where a device is, but simply know that on that iPhone or iPad or iPod had already Installed your app before.
This is done with a fingerprint that associates two bits of information (namely 00, 01, 10 and 11) and a time stamp with a date and time to identify the devices. This information will always be held by Apple and, if developers want to access it, they will have to apply first. It is not yet clear whether Apple will delete this information when it decides it is not useful or if it allows users to do the same, but the developers themselves can delete or edit it if they see fit. Explained about DeviceCheck, why has it Developed Apple this technology?
According to Katie Skinner at WWDC 2017 on Monday, “many developers are working on a variety of techniques to identify devices … To do this, many may be storing lots of information to associate certain states with a device.” In other words, Apple wants to make life easier for developers who do not want users to take advantage of free trials or those who have used a device for something fraudulent can continue to operate with it in the same way.
On paper, this solution seems very suitable, while Apple and developers record a minimum of user information to identify their device and prevent, for example, constantly erase a news app to use again and again its period Of gratuity. It remains to be seen if this new tool is used properly and does not harm the user who, for example, acquires a second hand phone. In that case, it is not clear how Apple or the developers will work and remains on the table the possibility of some damage to the secondhand market.