One of the most satisfying aspects of contributing to OpenStreetMap for me is walking a previously unmapped hiking trail, adding it to OSM, and seeing it appear on waymarkedtrails.org (and later in various hiking-oriented Android apps).
Recently I had the chance to survey a short waymarked trail that was completely unmapped (both the physical path and the waymarking). Here are the "before and after" screenshots from hiking.waymarkedtrails.org.
@SchwarzeLocke oh so it's built in? I never remember what's built in and what's a plugin these days.
I have mostly used it to correlate across devices when I was doing some photomapping with a GoPro timelapse.
@SchwarzeLocke @InsertUser I am also unsure at times with JOSM if I am using a plugin or not, but in this case think it is built in as described in see "Arranging photos on a GPS trace" on the Wiki.
https://wiki.openstreetmap.org/wiki/JOSM/Photomapping
Where you do need a plugin, I think, is if you want to save the location to the EXIF of the photo files. But that's not needed purely for mapping.
Of course none of this helps much if you don't have a track...
Alan Grant
SchwarzeLocke
InsertUser