Multitool.
.... If it's a no-no for work, go work elsewere.
Go work elsewhere if you can't carry a multi-tool? Theres some solid advice folks. Nothing like getting carried away with the whole EDC thing.
I like to say I am as "prepared" as the next guy, but to laynard a second set of keys to my body or carry a flashlight to use, and one "not to use" is a bit over the top for normal everyday life IMO. It's a wonder some of us can walk around the corner to check the mail without a tac vest full of supplies.