2026-09-20 18:59 UTC
@jwrm22@hsnl.social Maybe you've seen this... a deceiving QR code from awhile back.
https://hackaday.social/@hackaday/113879712931393846
Replies (1)
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@jwrm22@hsnl.social 2026-09-20 19:12
@lfisk@infosec.exchange I had not seen it, and the idea is quite clever. There is a whole thread of experiments by him and others. There is a lot of room for experimentation. In CTF terms, just gibing someone a bunch of hexadecimal values which displayed correctly is a QR can already be quite the puzzle. https://mastodon.social/@gvy_dvpont/113873265010018431