gps - Calculating Short Distanced Traveled IOS -


i'm working on part on app requires user walk distance in order continue. it's relatively short distance 25ft or 30ft. once user walks distance can continue. have done research i'm having trouble finding out how this, came across tutorial. http://www.techotopia.com/index.php/getting_location_information_using_the_ios_7_core_location_framework

i followed , works distance calculator not accurate @ all. there way can calculate 25/30ft accurately iphones gps? please let me know because i'm stuck here. thanks!

25 feet 7.6m

this bit low detect in many cases.
change 10m or 15m.

another solution count steps.
there ios api (from apple) can count steps, based on acceleration sensor


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