Super Famicom Twin Tap - What is it?

[Trenton_net]

Hi Everyone,

Does anyone know what the Super Famicom Twin Tap adapter is for? Is it some kind of buzzer/foot controler device that allows more people to play quiz games or something? For that matter, does anyone know which games support the Twin Tap?

[Jedi Master Baiter]

These would be good for Hot Seat Harry: https://www.romhacking.net/homebrew/46/

Apparently it's used for Shijou Saikyou no Quiz Ou Ketteisen Super.