It became common practice for curious users to attempt to discover these exposures, but some system programmers used these exposures rather than develop their own user-written SVCs.

"We were prepared for a lot of traffic and a lot of curious users," Ms. Antonucci said.

A number of curious users pressed the button while watching the toilet to see its mode of operation, and promptly received a jet of warm water in their faces.

The idea with the cumbersome and ghastly horizontal slider (or carousel or whatever it is) is presumably to triple the amount you can potentially expose to curious users.