Increase the accuracy

[Enryuwashere]

Hello Im using OwnTracks application in my Iphone for my research right now, I would like to know are there any devices that I can buy to integrate with the Iphone for increasing the accuracy of the GPS Positioning in OwnTracks app?

Thank you

[ckrey]

No as far as I know!

OwnTracks uses the Location services of iOS and uses the best available location source.

Under which circumstances do you think the location accuracy is insufficient? Typically, the accuracy is +- a few meters.