Online & terminal-by-card swipe verification service

This is a unique and challenging opportunity for the right programmer. I wish to be able to encode an ID# on a magnetic stripe card that can be swiped by end-users at nightclubs and entertainment venues. This reader would transmit the ID# to a central server for response. The response would show at the reader location on the swipe devise a simple 'yes, caution, no' (For example: one of three "lights", red/yellow/green, based on information in the database.) The database should also be available online for end-users to enter ID#s online for more detailed information. This bid is for programming and to make suggestions for equipment for the card-swiper that will function with the programming.