The DataHand has magnetically held keys. If you press them too gently, they don't move at all, so there's no chance of pushing them a bit but them not registering.
When you push hard enough to move them, they pass through an optical sensor and then can move a lot further, so there's effectively no equivalent to keys bottoming out, or the feeling of jamming your finger into a hard surface.
It's such a good design to invert both those problems and make them non-problems, I'm a bit sad I haven't seen it anywhere else on a more common style of keyboard.
Of course I am typing this is on an mechanical keyboard with Cherry Switches, which is the only way to type