This is actually a really interesting case. On one hand, there is typically a specialized company involved creating those maps. On the other hand, the mall which requested them is, by law, required to create them and to put them at visible places in the mall (thus "publishing" them). According to the European Database Law, they would thus not be eligible for copyright and should be considered public domain!
However, I wouldn't build a multi-million company on it...
One can perfectly use matrix for chat as well, especually with e.g. Fluffychat as client.
And yes, matrix is encrypted too
For toilets and showers: https://mapcomplete.org/toilets For drinking water: https://mapcomplete.org/drinking_water (edit: I erroneously pasted the toilet-link here before as well)
It is the abbreviation of OpenStreetMap.org, a crowdsourced map of the world. You've 100% sure already used the data of the project, in the form of Organic Maps, OsmAnd, the maps on Facebook, instagram en Whatsapp or Pokemon Go.
Also checkout !openstreetmap@lemmy.ml
amenity=drinking_water is a place where you can get drinking water. There is no requirement to be able to drink directly from the water jet. Even more, the 'fountain=bottle_refill' makes it clear that this is not possible.
I use maps for navigation (mostly OsmAnd) and improve OpenStreetMap with my self-made website (https://mapcomplete.org)
Should indeed be doable, but please: do not upload this data into the "real" OpenStreetMap.org. We don't do parcel data (it is not verifiable on the ground), and imports are something that should be done with care.
However, you can use the tools. Use JOSM to prepare the data and convert it to a .osm-format on your local computer. Then use the OBF-creator to make an OBF file which you can drop at the right location on your phone. The map creator is right here :https://osmand.net/docs/versions/map-creator
Ah, I was talking about desktop. Afaik this is not yet on mobile.
I'm using Fennec BTW
Look for a local hackerspace, they might have the right connections. Most of them have regular (often weekly) 'social nights' where you can hang out.
Https://Mapcomplete.osm.be/hackerspaces has an (incomplete) listing
Should be possible. With reviews however, one needs a central curator to weed out the spam reviews...
Which is why an open license is important: it allows to fork if needed.