"Idea-instructions" bills itself as "An ongoing series of nonverbal algorithm assembly instructions", with a half-dozen illustrations of popular computer science concepts covered to date; the latest covers Public-Key Crypto, one of the most important and elusive concepts from modern crypto.
Public-key cryptography can be used for (at least) two purposes: A person’s public key can be used to send encrypted messages to the keys’ owner. And that person can use their private key to create digital signatures, demonstrating the authenticity of a message.
Connor Krukosky's lifelong hobby was collecting and refurbishing superannuated computing equipment, which is surprisingly cheap provided you have a lot of space -- Krukosky scored things like keypunch machines for a mere $7 (though he had to drive 1,000 miles roundtrip to get it home).
The Lixada LED Handheld Flashlight is a $9 stocking-stuffer ($29 for 4): a six-LED/36 lumen flashlight that clips directly over the terminals of a 9V battery, forming an easy flashlight rated for up to 10,000 hours (battery life depends on whether you're switched to 6, 4 or 2 LEDs). One reviewer uses 9V batteries swapped […]
So you missed Black Friday and Cyber Monday? Well, there’s one more holiday milestone coming up: Green Monday, on Dec. 16. It’s one of the busiest online shopping days for the simple reason that it will be 10 days before Christmas, which is when last-minute shoppers start to stress. Our advice? Don’t wait for that […]
Weighted blankets are officially a thing. And if you’ve ever tried one, you know there’s a reason for the fuss. Parents have known for generations that swaddling a baby has a profound calming effect, and the gentle pressure that blanket weights provide can have the same effect on restless sleepers. Pretty much all parts of […]
Walk through any office, and you will likely spot a few bobbleheads. These wobbly figurines are great fun to have around, although most celebrate people we will never meet. For something a little more personal, try Handmade Custom Bobbleheads. These mini caricatures are sculpted and painted by skilled artisans, based on any photo you provide. […]