Of the devices used by the Shyedarians during their most recent campaign of expansion and conquest to control those they had subjugated, clog legs were among the simplest. Clog legs were cybernetic leg replacements with a remote deactivation switch. The subject's own legs would be surgically removed and replaced with the clog legs. If the subject tried to flee or cause trouble, their captor could simply deactivate their legs, effectively immobilizing them, using a remote control with the proper access code. Unlike Heart Crystals, which were used throughout the Imperial military and with all captives of war, clog legs were generally only used on prisoners.