Japan Transparent Public Toilet Smart Glass
“The Tokyo Toilet Project” collaborated with sixteen architects to renovate public toilets in parks around the Shibuya District. The goal was to make people feel comfortable using public toilets, while also fostering a spirit of hospitality for the next person. Architect Shigeru Ban came up with this transparent design for the Haru-no-Ogawa Community Park and the Yoyogi Fukamachi Mini Park.



These may look transparent at first, but step inside and lock the door? The smart glass becomes opaque. How does this electrochromic glass work? Well, by simply applying a low voltage of electricity when the door is locked, the glass darkens coating the lithium ions and electrons transfer from one electrochromic layer to another. By unlocking the door, the polarity is reversed, thus causing the ions and electrons to return to their original layers and return to its clear state.

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