Do you have any suggestions for giving coordinates indoors?
Previously, I have waymarked inside airports that I knew well enough to guestimate where in the airport I was, and give good directions to someone hunting without a GPSer.
I was at Amsterdam airport for about six hours, and spend about one hour walking from one terminal to the other. I photographed a Starbucks and a McDonalds, and I think I could guess at a coordinate based on proximity to another waymark existing that I walked past. Does anyone have another suggestion for a better way?