Yes, finally I can see that things are slowly moving forward. I am trying to complete the python port of STAMPS and somethings seems to work. Thanks to the help of Micah Dowty and Korakot Chaovavanich I managed to put together a working prototype. At the moment I enabled an annotation layer that displays a red dot on top of the Google Map tile and that allow the user to pinpoint a specific point on the tile. From here, it should be possible to implement the rest of the functionalities with a “relative” ease 🙂 .  More info soon …