Toshiba is developing a new Internet-based communication encryption system that analysts claim cannot be breached. The primary challenge in creating a foolproof system has been building a key to decode encrypted data that can be safely transferred from one place to another. “The key for Toshiba’s quantum-cryptography system will come in the form of photons that are delivered through a custom-made fiber optic cable not connected to the Internet,” The Wall Street Journal explains. “Due to the nature of the particles, any interception or wiretapping activities on the cable would change the form of data, making any spying attempts detectable.” Toshiba hopes to commercialize the service by 2020.