DIY two-factor authentication for your every need

The Cybersecurity and Infrastructure Security Agency (CISA) recommends using Multi-Factor Authentication (MFA) over just passwords to secure online presence. This article discusses how the author implemented 2FA into an everyday action - locking and unlocking their door. They used a Raspberry Pi, a servo-motor, and 3D printed housing for this project. The system includes a number pad switch, Node.js for controlling servos, and Bandwidth's 2FA service for added security. The author also shares the source code and design files for those interested in building their own smart lock.