Mastodon FeedJan 4, 2024, 3:17 AM Reblogged by jsonstein@masto.deoan.org ("Jeff Sonstein"): JenMsft ("Jen Gentleman") wrote: How QR codes are made: Attachments: It's a gif with someone generating a qr code by playing tetris with the black parts (so laying down each black tetris piece one by one, badly)