Instruction Button on faux-marble background. When you press the button, instructions are provided on how to use the buttons. Ray Fung provided me with one "get in free" token.

The JCDcaux Toilet bristles with digital readouts and buttons.

If the door remains shut for some inexplicable reason, an emergency 911 button, when pushed, dials 911. Just speak up loudly to relay your predicament. Example: "Help, I'm trapped in a pay-toilet in the Plaza de Cesar Chavez and I hear Quetzalcoatl rolling in my direction!"