ATMs have the same problem with viewing angles. It's funny with those too because that interface will always be used at extreme angles: From above (potentially) when a person is standing at an ATM, from straight on if they happen to match the ATM's screen height, and from below if someone is sitting in their car.
A good case for touch screens, where the label is the interaction point.
A good case for touch screens, where the label is the interaction point.