🚀 go-pugleaf

I have sifted through the various replies (for which I am grateful) and
one way of solving my keyboard problem has risen above the others in
popularity and clarity.

The preferred solution is to wire a remote switch into a multi-button
mouse (or a joystick, infra-red mouse or some other input device). This
solution implies that the remote switch would then emulate a mouse
click.

So, the theory is that what can be 'clicked' with a mouse button can
also be clicked remotely by a switch. My last question is, then, can
Option and Shift be 'clicked' with a mouse button?

My original question was:
> Can anybody help me?
> 
> I want to use a switch to do the same job as any one key on a Mac
> Keyboard. What do I need to make or buy to put between this switch and
> the keyboard or between the switch and the computer?
> 
> I am designing an art exhibition and I want people to input simple
> information (one key) into the computer without using the keyboard or a
> mouse.
> 
> If it is possible, I would like the key that is substituted to be the
> Shift key or the Option key.