[throwaway1239Mx]

Came here to comment on binary finger counting; found it'd already been said!

I have trouble with some positions due to the ring/pinkie connection, but for me it's more of an internal count anyway, so something like counting a 'down' finger as '1' instead of '0' makes it a lot more comfortable, or even '1' is finger touching a surface, '0' is not - which can involve moving a digit only a few mm or so.

The 1023 thing does require fine motor control of at least ten appendages, though even legs-arms-tongue gets you to 32, if a bit inconveniently.