Putting a screwdriver on a keychain isn’t an entirely new concept, but these “heat treated blackened steel” screwdrivers with the flattened heads look like they might actually work pretty well in a pinch, even on otherwise stubborn screws.
I’d suggest maybe keeping your keys and your delicate touchscreen cell phone in separate pockets, but that rule works even without pointy screwdrivers attached to your keychain.
You get both a Phillips-head and a flathead for $10. Ooooh! It includes a keyring, too!
Keychain Screwdriver Set [Vat19.com]
UPDATE: Matt posted this almost a month ago. See his take here, and keep reading CrunchGear for the very latest in old news!