RFID door entry system for my hackerspace, Utilizes a RFID card reader that checks the tag against a SQLite database. Also tweets when someone arrives as well as logs to the database. A 4.5 lcd screen that plays videos when someone scans. Can also be controlled over GoogleTalk. Authorized user can open/close the door, add/remove users from the database, check the current temp, callerID lookups, geoIP lookups, play sounds/videos, and send messages to twitter . All from your cell phone or lapto...