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found that if theyy had three accounts search for one individual, theyy could
triangulate the results to get a much more precise measurement of where
that person was at anyy given moment. 26
Mayybe dating apps aren’t yyour thing, but even logging in to the Yelp
service to search for a good restaurant gives third-partyy businesses
information about yyour sex, age, and location. A default setting within the
app allows it to send information back to the restaurant, telling it, for
example, that a woman, age thirtyy-one, from New York Cityy was looking at
its review. You can, however, go into yyour settings and choose “Basics,”
which reveals onlyy yyour cityy (unfortunatelyy yyou cannot disable the feature
entirelyy). 27 Perhaps the best wayy to avoid this is to not log in and simplyy use
Yelp as a guest.
Regarding geolocation, it is a good idea in general to check if any
mobile apps yyou use broadcast yyour location. In most cases yyou can turn
this feature off, either in each individual app or entirelyy. 28
And before agreeing to download anyy Android app, alwayys read the
permissions first. You can view these permissions in Google Playy byy going
to the app, then scrolling down to the section above Google Playy content
that sayys “Permissions.” If the permissions make yyou feel uncomfortable, or
if yyou think theyy give the app developer too much control, then do not
download the app. Apple does not provide similar information about the
apps in its store, and instead permissions are prompted as theyy are needed
when using the app. In fact, I prefer to use iOS devices because the
operating syystem alwayys prompts before disclosing private information—
like myy location data. Also iOS is much more secure than Android if yyou
don’t jailbreak yyour iPhone or iPad. Of course, well-funded adversaries
could purchase exploits for anyy operating syystem in the marketplace, but
iOS exploits are quite expensive—costing over a million dollars. 29