CODEWITHSUNDEEP
iphonegeolocation
Zakaria
Zakaria

Reputation: 15070

iPhone and data geolocation accuracy

I'd like to develop an iPhone app that must that locate the user in a museum then popups some useful information about the sculpture he is looking at.

Thus, these questions came to my mind:

Thank you,

Regards.

Upvotes: 0

Views: 2567

Answers (3)

Ricardo
Ricardo

Reputation: 21

Simply forget it. Even in outdoors conditions, GPS accuracy is not reliable. Even when the iPhone GPS says it is reaching "meter" desired accuracy, in fact, most of the time, it is way worse than that. Also, the highest accuracy you request from the device, the more battery and CPU it will take. In other words, a "museum" GPS application is impossible to become true until a new geo location technology replaces the current one based on satellites.

On the other hand, you could explore more accurate alternatives based on the camera, like QR-Code, image recognition (i.e. Google Googles) and so on. These will certainly give you a much higher level of accuracy inside a building, consider that all you want to do is to detect what is in front of you.

My 2 cents.

Upvotes: 2

Sorin Antohi
Sorin Antohi

Reputation: 6135

Inside a normal building you will not get a GPS signal(unless you are close to a window). If you have a building with glass ceiling it might be possible to get a GPS fix.

From cell triangulation you will not get useful positional information either.

How accurate are the longitude and the latitude values ? Because I want to give to each place in the museum this couple of values so that they will be located.

outside, these values are pretty accurate 1-2 meters error at most.

Upvotes: 0

hotpaw2
hotpaw2

Reputation: 70683

Many museums will have a roof or upper floors that a good GPS signal will not penetrate, so you might not get any more accuracy than the fact they are in the building or neighborhood.

You may have better luck in an outdoor museum with a clear view of a lot of open sky (and thus GPS satellites)

Upvotes: 1

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