Really? You could use an iPod touch for GPS data collection?

Yes, provided you also get a compatible external GPS receiver to use with the iPod touch device. GPS receivers range widely in price, in keeping with the degree of precision they provide. A few expensive GPS receivers (such as iSXBlue and EOS Arrow) are available for renting for undertaking short-term work that requires sub-meter horizontal position accuracy.

Some companies employ multiple workers to perform GPS/GIS mapping and data collection tasks. Unless they already own iPhones, it will be more economical for them to run our iGPSGIS II or iCMTGIS III app on an iPod touch in conjunction with the external GPS receiver.

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