Re: "unique screw head types and gluing or soldering components"
"New screw head designs"
Can be copyrighted, Once you own the copyright, you can control production - and prevent "non-authorised entities" getting hold of them.
Not that this is new. IBM PC XTs had "special" screws on the PSUs (no slots, notches or other things to undo, courtesy of a snapoff head) back in 1980. The only way to get them apart was to dremel a slot into the screw and then throw it away afterwards.
There's a whole range of security screws out there with highly limited distribution and "control" over who has the tools. On top of Philips/Posidrive there are another dozen crosshead types alone. (Hint: Japanese cars use neither)