The company needed some truly random numbers for its security solutions, so it turned to some groovy old tech: lava lamps. In their office is a wall of 100 lava lamps monitored by cameras.

One unusual approach to random number generation involves lava lamps. By using an algorithm, the complex patterns of lava lamps can be recorded and, by visual data changed into a random number.

Jessica Orwig: No. It really does look like human fat. Jones: That's me and my boss opening up a lava lamp. [glugging] Oh! Are we getting these noises, guys? Our goal was simple: to figure out ...

Following is a transcript of the video. Narrator: Lava lamps might be the most cult item of lighting in the world. Since their invention in 1963, millions of the lamps have been sold across the globe.