typically you don’t know that you are looking for steel-balls in sand, you might be looking for gold coins etc. in such cases the space of all interesting fingerprints is just too large.
still love it. Been hosting a small (aprox 20 people) instance for a non-profit since more than 8+ years (even before owncloud and nextcloud split up).
They forgot to mention how many times it helped to find people in need. its easy to say 45 times there was an error - imagine how many times emergency services around the world get sent to the wrong or unaccurate location...
eventually got me to this: https://arxiv.org/abs/2409.15561 maybe interesting for someone whos privacy focused.