It really is about time that the standard door handle is reinvented, in this concept called the E-Lock puts forth a practical proposal. Designer Pasque Dudley Mawalla figures that cut metal keys may as well be left behind, and that the act of turning a latch offers only limited accessibility.
The solution is a doorknob that one can easily operate with her hands full. A compact keychain pass card could be waved before the built-in sensor, and a simple nudge to the lever would release the bolt with no wrist acrobatics required. What these mean is that entry into one's home or apartment is a little closer to being barrier-free. The E-Lock system would be great for parents with young kids, and for people with a range of physical disabilities.