The worst keyboard I ever typed on was attached to something called (I
think) an "Infoton" terminal.
Yeah, this:
http://terminals.classiccmp.org/wiki/index.php/File:Infoton_Vistar_GT.jpg
http://bitsavers.trailing-edge.com/pdf/infoton/Vistar_Technical_Users_Manua…
It was upper case only (which is horrible enough)... but the keyboard.
It was like typing on a wet sponge. I wish I could find one so I
could (gasp) take a sledgehammer to it. The ASU remote sites had a
large number of these, and a small number of VT100s, and everyone was
desperately trying to avoid them.