Canadians’ mobile devices are filled with applications that collect personal information, including identifiers that are engrained into different parts of the devices. But what exactly are these identifiers, and how are they used?
An identifier is a piece of information (usually a sequence of characters) that’s used to uniquely identify a device, a user, or a set of behaviours taken on the device. Mobile identifiers constitute privacy-affecting technologies because they can be used to correlate an individual’s various activities while using a phone, tablet, or other connected device, and they support the linking of devices with actual persons.
Our mobile devices are filled with identifiers that uniquely label different components and behaviours. The radios and other physical hardware, operating systems, applications, and even web browsers are all rife with identifiers that can uniquely identify the device, the person using the device, or the behaviours of the user. And while these identifiers are typically meant to serve a useful purpose, the user is often unaware that these identifiers exist or how they’re collected and used. We will outline several of the most prominent identifiers associated with mobile devices and their significance for privacy.
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