[pmoriarty]

"Cameras are a bigger threat and I haven't seen any good novel ways to defend against that."

My method is not novel, but to guard against cameras and shoulder surfing when typing in a code on a keypad, I've always just covered my typing hand with my other hand.

At some banks, I've seen keypads retrofitted with raised sides, presumably to make viewing the keys from the side impossible. Your hand is still visible when you type on those, though, and so I would guess the keys that you type could be inferred from your finger motions. Anyway, the top of the keypad is not obstructed (so that the user can see it themselves), so a camera from above or someone from behind might still directly see what keys you type, so I still cover my typing hand with my other hand even when using these types of keypads.