okay, but, how about some trully innovative stuff?

my proposal:

we need ten numbers in total (0,1,2,3,4,5,6,7,8,9) to form any number

we have ten fingers

with a device that recognizes which finger we tap (easy to implement) we can "type" numbers, as far as I can imagine, much faster, by tapping our ten fingers

or even more faster, if we tap two, three, etc fingers at the same time, to type 1, 2, 3, etc numbers (easy to implement too)

any comment on this?