This article is from the Ergonomics and Typing Injury FAQ, by Dan Wallach email@example.com with numerous contributions by others.
Bilbo Innovations, Inc.
800-203-0092 or 408-736-6086
1290 Oakmead Parkway #118
Sunnyvale, CA 94086
$99 (free shipping in US and Canada)
Step-On-It Keyboard Control Pedals add three foot switches which can be
configured to generate any keystrokes from the keyboard including macros.
It works entirely in hardware, so it should also be compatible with X
terminals and other electronically compatible devices.