OSM provides all data, including who created them and at what point in time. I see that beacondb has more sensitive data, since the users have been definitively at that time in that place, but I do not see why it should be a problem to just publish no users.

In how far is beacondb any better that Google collecting that data (except for beacondb not beeing a monopolistic company that is selling your data)? The advantage of OSM is that the data is not tied to the OpenStreetMap foundation. Whenever it collapses, users can create a new instance, since the software and the data is open and publicly available.

Is there any way to access the data from beacondb.net, or is it just a service for getting the location. That would be like OpenStreetMap only providing the tiles but not the data itself.