Unremovable screws? (without special tool)

[Electric_Andy]

How do you replace the bottle cage when it becomes time?

drill out the head, attack with sharp implements, and/or mush a sacrificial driver bit in until it grips. Whatever you do, it'll take a lot of time, but that's the idea to deter opportunistic scrotes

 

[nogoodnamesleft]

EDIT - doh! It comes with anti theft screws already.

Trouble with the "anti-theft screws" is that the tools to unscrew them are readily available. To the point I'd expect any kitted-out bike thief to have most in their pockets.

 

[Webbo2]

I’ve had plenty of unremovable screws in houses I’ve moved in to. Usually slotted screws in wood and covered in paint.