I remember always running to press the elevator button when I was five or six. To the point where my dad once said that I should just have a box with buttons and switches.

Instructables user talk2bruce created the Arduino Internet Gizmo, a card reader that takes you to your favorite websites with a touch of an RFID tag.

However, if you'd like to keep that data private, you need to roll your own. Instructables user gramsky shows how to create a system that tracks your movement with an Arduino.

Instructables user MakersBox did just that, with a tiny, modular Arduino-compatible board that can fit inside a Tic Tac box. The build uses a handful of parts, including an ATtiny capable of ...