Up until now I’ve been using Olympus’ handy little Android app (OI.Share) to create a GPS log for photos taken when going walkabout. It’s easy to hook the device up to the camera afterwards via WiFi and automatically tag any photos taken during that time.
As idiot-proof as that is, the logs remain useless for anything else. The app ignores any videos taken, and there’s no straightforward way to tag photos taken by another camera. Fortunately, the solution is simple enough. You can grab the log file (i.e. ‘share’ it via one of many services) and use the converter available at GPS Visualizer to transform it into a more widely-supported GPX format.
Thanks to hambier for sharing this information (although sadly not in Lëtzebuergesch!)