decodee.hubb on Instagram: "The post features a video of Shibuya's innovative public toilets, designed by architect Shigeru Ban as part of the 2020 "The Tokyo Toilet" project, using PDLC film to make glass walls transparent when unlocked for visibility and opaque when in use to ensure privacy and demonstrate cleanliness. This design addresses common public restroom concerns like hygiene and occupancy, with the film defaulting to opaque during power failures, as confirmed by project details from