Magnetic Cards and Forms 6i

I want to develop a forms application where the user will have to use his magnetic card to proceed. He can't type the data, if he doesn't have the card, he won't be able to put further information on that form, to avoid frauds we are facing on that data input.

I'm using Forms 6i (client-server) under Oracle 8.1.7.4.

Is there any way to accomplish this? An user exit? How?

Thanks in Advance,         

-- 
Tiago Rocha
Recife - Brasil
www.diariodastrilhas.cjb.net