Klemens Torggler's designed a thoroughly wonderful and mind-melting door system based on rotating, interlocking squares. There are several variations on the theme on his site, but the one above is the most elegant and polished of the lot.
Found on the popular subreddit r/mildlyinfuriating: a 7-Eleven with a street address of 712. I propose this specific 7-Eleven either change their name to 7-Twelve, or move locations. I just… READ THE REST