But this new idea was as brazen as the Trojan Horse. The engineer’s idea was to trick Apple by using a technique called “geofencing,” using the GPS and IP address data from the phone to tell Uber where the user was located. A “geofence” acts much like it sounds; if the user is within a specific geographic radius, the app would perform a certain way. In Uber’s case, if the Uber app was used within the Bay Area or near Apple’s Cupertino headquarters, it wouldn’t run the InAuth “library” of code, which asked for the personal data needed to fingerprint phones. What that Uber engineer
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