GlobalSat DG-200 USB Datalogger
I've been using the DG-200 for a week now-just trying it out to see how it works in a car, walking and inside buildings.  It's amazingly good!  I purchased the unit to supplement a new high-end point and shoot camera that has extremely poor GPS performance compared to a cell phone.  I initially tied several GPS logging apps on a Galaxy S4-with unacceptable results. What I learned about the DG-200 so far:      Don't use the enclosed CD-there is an up-to-date program on the Globalsat website. There is no need