Featured image of post How Touch Screens Work: Why Glass Can Detect Your Finger's Position

How Touch Screens Work: Why Glass Can Detect Your Finger's Position

The smartphone screens we touch every day. Why can a display that looks like ordinary glass accurately read the position of your finger? We explain the engineering mechanisms behind this familiar technology, such as capacitive touch and the principle of multi-touch.

Featured image of post History of Cryptography: From the Enigma Battles to the Birth of Public-Key Cryptography (RSA)

History of Cryptography: From the Enigma Battles to the Birth of Public-Key Cryptography (RSA)

The history and mathematical principles of cryptography, the foundation of information security. Delving deeply into the trajectory from ancient cryptography to the deciphering of Enigma, and up to modern public-key cryptography (RSA).