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Is the ride-hailing app secretly monitoring you? Probably not, however this iOS characteristic could make it really feel that means.

How Uber seems to know where you are – even with restricted location permissions

If you land at an airport, it’s possible you’ll be greeted with a notification in your telephone that reads:

“Welcome to [your location] – Open the app to get instructions to the Uber pick-up level.”

For privacy-conscious customers who solely permit apps to entry their location whereas the app is in use, this could really feel unsettling. How may Uber know the place you’re for those who restricted the app to entry your location solely whereas in use?

Figure 1. Uber notification iOS

After seeing the message a number of occasions, I lastly checked Uber’s permissions, sure it was set to solely “whereas utilizing the app” on each my private and enterprise telephone. And certainly, Uber’s location entry was set precisely as supposed: “whereas utilizing the app”.

And but, each gadgets displayed the identical notification every time I landed, and getting this permission unsuitable on two gadgets appeared extremely unlikely. (As an apart, why there are different choices past this one is baffling. Why do any automobile service or meals apps must know your location if you end up not actively utilizing them – apart from to trace you for business causes?)

Figure 2. iOS location settings

The one different motive for what some may view as a privateness infringement could possibly be a characteristic referred to as “Background App Refresh”, which permits an app to run and replace its content material even if you’re not utilizing it. Alternatively, this might be in opposition to the precept of limiting location entry to solely whereas the app is in use, and it appears implausible that any app, particularly on iOS, can be allowed to bypass such a basic privateness management.

So, how does Uber (and maybe different apps) know the place you’ve simply landed?

The reply lies in a characteristic referred to as “UNLocationNotificationTrigger” that Apple supplies to builders. This characteristic permits an app to fireplace a pre-configured notification when the gadget enters or exits a specified geographic area, similar to an airport. That means, it successfully circumvents the intent behind the “whereas utilizing the app” setting.

So, to reply the query above immediately: no, Uber or different apps don’t know your location if you land. The notification is generated domestically in your telephone when it detects that you just’ve entered the pre-defined airport’s geofenced space.

Alternatively, the notification’s wording is deceptive: it makes it really feel like Uber is actively monitoring you and is providing steerage. In actuality, it’s solely if you faucet the notification and open the app that your gadget shares your location with the app.

There are reputable causes for geofencing, after all. For instance, a household security app could notify mother and father when their youngster’s gadget enters or exits a delegated protected zone similar to a faculty or residence. Or to make use of one other instance, a smart-home app may remind you to modify off the lights if you go away the home.

Nonetheless, utilizing the identical mechanism for what can solely be seen as promoting is, in my view, an overreach. On this occasion, Uber is promoting its providers as quickly as I’m throughout the boundaries of the airport. Think about strolling by way of a excessive avenue and having each retailer’s app ping you to come back inside, principally ignoring your determination to share your location solely if you’re utilizing their app.

It might appear wise for Apple to tighten the principles round location-triggered notifications and limit them to non-advertising functions. This could make sure that the notifications are restricted to performance that serves the consumer and isn’t used for monetization functions.

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