Bought mine 'Used' to catalog Findgrave marker locations. Almost like "plug and play", just remember to set up the camera to register the receiver. After using it, take photos as usual, after completing the task, upload them to any photo processor you use and you can find the coordinates in the GPS section of the metadata. After processing the photos and uploading them to Findagrave's website, you will see that the GPS coordinates are automatically uploaded to the location map. No fuss, no fuss. When people click on "show map" the location is shown. Fabulous! UPDATE: Don't forget to follow the instructions in the manual (you can find it online) and calibrate the device according to your region. It is very important that once the download is complete, it shows what area you are in. I love this item.