Darwin@feddit.deM to Interesting@feddit.de · 3 years agoVisual Cryptographyupload.wikimedia.orgimagemessage-square8linkfedilinkarrow-up180arrow-down134
arrow-up146arrow-down1imageVisual Cryptographyupload.wikimedia.orgDarwin@feddit.deM to Interesting@feddit.de · 3 years agomessage-square8linkfedilink
minus-squareLittleleeroy@lemmy.worldlinkfedilinkarrow-up2·3 years agoWhen I was a kid (in the 2000s) I had a subscription to the James Bond magazine. It had lots of cool spy things including this. I had 2 different plastic cipher keys that you’d move over the “static” image and it would reveal secret info.
When I was a kid (in the 2000s) I had a subscription to the James Bond magazine. It had lots of cool spy things including this. I had 2 different plastic cipher keys that you’d move over the “static” image and it would reveal secret info.
D R I N K M O R E …