I already found an article with some explanations how to connect a barcode an ps2 reader to a arduino,
So I think i'm going for it, trying go gather the material to start this.
I will need:
Arduino (got it);
ps2 barcode reader;
nokia display with joystik;
Micro sd Module;
The ideia is to read the barcode, dispay is data and store it in the memory card.
After that i will build a program to copy the data from the memory card, and store the data in a mysql database.
I acept all the sugestions and critics possible 