Lava lamps as a cryptographically secure source? How a bunch of lava lamps protect sites from hackers

Inside the San Francisco office of the web security company Cloudflare, 100 units of craven walker’s groovy hardware help protect wide swaths of the internet from infiltration.

Here’s how it works. Random numbers are critical for all modern forms of electronic security because if hackers can predict the number, they’ll impersonate you. Computers can’t generate true randomness—but nobody can predict the goopy mesmeric swirlings of oil, water, and wax. Cloudflare films the lamps 24/7 and uses the ever-changing arrangement of pixels to help create a superpowered cryptographic key.

[very groovy article 😉 ]