Cloudflare provides security and domain name services for millions of the most prominent sites on the web. One of the key factors in its system is a wall of 100 lava lamps in the lobby of its San Francisco headquarters. Coding just isnt great at generating random numbers because, at its heart, code requires a system to mimic chaos. The best encryption has a truly random key so its more difficult for a bad actor to guess how to break the cipher. The company videotapes its wall of colorful constantly morphing lava lamps and translates that information into unique cryptographic keys.”]
Source: https://gizmodo.com/one-of-the-secrets-guarding-the-secure-internet-is-a-wa-1820188866