Did you ever own a lava lamp? If you grew up in the 1960s or 1970s, there is probably a 10% chance that you did. Speaking of 10%, the humble psychedelic lava lamp is now securing about 10% of the internet.

Yes, lava lamps are the key to beating hackers. 

A British inventor came up with the lava lamp in 1963, suspending a wax globule in a clear liquid inside a glass container. The light bulb in the base both provides illumination and keeps the blob rising, sinking and morphing through thermodynamics. It's not important really to know how it works. You know that the groovy lamps became an icon of the hippie era.

Today, however, they are helping to encrypt data.

The San Francisco tech firm Cloudflare (which almost sounds like a brand name for a lava lamp) provides digital security for companies such as Uber and OKCupid. Its headquarters features a wall decorated with 100 lava lamps in blue, orange and magenta. There are not just there to set a mood.

A camera points at the wall and records the movement inside the lava lamps. The natural randomness of the "lava" flow provides a hard-to-crack encryption code. 

Learn more in the interesting video from Atlas Obscura below. Did you have a lava lamp — do you have a lava lamp?