Seems “tourists” are taking photos of Russian artillery emplacements and posting them. The Ukraine military then uses the geotag coordinates to launch attacks. That’s technology put to good use.
(FYI - Most or all phones can now do this. Be sure you know your settings and if your phone is tagging photos with locations before posting them publicly or even sharing them. You could be revealing your or others’ location to anyone who can access the photos - like our Ukraine friends are doing.)