Tokyo installed see-through public toilets in a park to let people inspect their cleanliness before using them, at which point the glass turns opaque on August 19, 2020 Get link Facebook X Pinterest Email Other Apps People can see through the colored "smart glass" when it's not in use. The glass then turns opaque when the door is locked. from Yahoo News - Latest News & Headlines https://ift.tt/3aLRlLP Comments
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