Uniquely identifying users so that they can be tracked as they go about
their business on the internet is, sadly, a major goal for advertisers and
others today. Web browser cookies provide a fairly well-known avenue
for tracking users as they traverse various web sites, but mobile apps are
not browsers, so that mechanism is not available. As it turns out, though,
there are ways
to “fingerprint” Android devices—and likely those of other mobile
platforms—so that the device owners can be tracked as they hop
between their apps.
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