He said decoding the QR code is easy. First, download a QR app on your smartphone. "It just gives you basically a camera window that you apply to the QR code," Erickson said.

This article traces the role of code in human civilization, from ancient times to the modern era, using a historical lens to explore the progression of coding languages and their impact on technology.

Polar codes represent a seminal breakthrough in error-correcting coding, enabling communication systems to approach the theoretical capacity of a channel with low-complexity decoding methods.