I am doing a blind let's play of the game (only briefly checked a couple of wiki pages and avoiding all spoilers on the forum) and I am having trouble understanding the locked doors/crates in the game. When I clicked on one such box it stated "Locked (electronics 17)" and I have 19 Electronics skill, but it wouldn't open. I am clearly misunderstanding the system here, so if its not looking at my electronics skill, is it looking at my hacking skill instead, or something else? And how does a "Locked (mechanical 17)" door work?