Photovisit
 

Living near national parks I have taken so many photos I am now not sure if I have already taken the picture in my camera viewfinder. 770 to the rescue. I have loaded all existing photos and check to see if I want to photograph the subject again. Pair the 770 to my mobile and I can discuss my previous photography efforts with others who can see the same photo on their screen as on my screen. Test drive the python script.