Business cards are usually just paper, but I wanted mine to do something. The idea first came to me in 2014, when I started sketching concepts for an interactive business card. In 2016-2017 I built the first prototypes, and after years of picking it up and putting it down, I finally finished it in 2025. The result is the BZCard, a credit-card sized electronic business card with: - OLED display for contact info, logo, and animations - Capacitive touch buttons for navigation - Smart power management with deep sleep and charging screen - A custom 3D-printed enclosure to showcase and protect it - And four hidden retro mini-games: Snake, Brick Breaker, Tetris, and Death Star This has been a long-running personal project, just something I wanted to build and carry for myself.