E system

A cardboard E in Harkness. Harkness has since abandoned the E system in favor of a gender neutral stop-go sign.

The E system, used in some buildings with group showers and gender-neutral bathrooms, lets others know who is allowed in the shower at that time. This lets whoever is already in the shower decide whether he/she wants others coming in or not.

The E has four orientations:

  • E: everyone (men, women, whoever) can jump in the shower
  • W: only women
  • M: only men
  • 3: "Me, myself, and I" — no one else until whoever's showering is done