Let me in, let me out. Easily, with neither pout, nor grimace.

Don't you just love the door that opens, as if by magic, with the push of a button? Even better are the ones that silently swing open upon your approach.

Screaming joints, wheelchairs, walkers, hands holding shopping bags or tightly clasping the fingers of young or old: "Open, Sesame" is a wish come true.