In about 200 cases, the developer created a way to track a device's identifier code; the other apps used this functionality from advertising or tracking software library.

在大约200个案例中，开发商创建了一个追踪设备识别代码的方法。其它的应用程序通过广告或追踪软件库使用该方法。

youdao

Good Windows Phone apps used to be in extremely short supply, but I was pleasantly surprised to see many of the same apps that I use regularly on iOS in the Windows Phone Marketplace.

CNN: Review: Nokia Lumia 900 is best Windows phone ever

However, the process is still fragmented with different apps being used to secure different benefits.

FORBES: Paying With Your Data: The Real Promise Of Mobile Wallets

Unlike television shows and motion pictures, which have very distinct age groups that they target, many apps are used by people of all ages.

FORBES: The Wild West of Licensing: Retailers Hesitant to Put the Cart Before the Angry Bird