3 ms·
That's a pretty awesome idea!
by joeblau 14y ago
That's a pretty awesome idea!
- nwh 14y agoHere's a physical one — http://hackaday.com/2012/10/29/qr-clock-is-unreadable-by-humans-and-computers-alike/ http://hackaday.com/2012/10/29/qr-clock-is-unreadable-by-hum...