I haven’t found many, but even though I’m 16 hours into the game I’ve mainly been exploring the first area. There was one in a little U shaped area full of junk sellers and stuff, building on the right walking in you could climb up ACs and balconies and find a door with no option to open it, so I just tried hitting it with a bat and that worked. Was kind of disappointed when the next 50 windows I tried did not.

But I’m 14 hours in, level 8 and I’ve just upgraded my cyberdeck to 1+ but I have like 6 level 2-4 schematics for neuromancy things from hacking in to all the network jacks I’ve found in weird places. And 60k monies, 3 iconic weapons, and… a bunch of food and booze. Which I think I should sell since it all seems pretty worthless bonus wise.