I am not sure if I am asking in a right forum, but since its about hardware so here I go,
I want to make a discount-card for my clients, similar to a debit/credit card. When they buy, we can swap their card on our counter to collect,
1 - clientID or some hint by which I can identify the client's unique record in my system.
2 - a prompt or something by which I can enter the amount of his shopping value, date and time then. So I can keep a record of his purchases
3 - a prompt on which I can mention discount percentage e.g 5% or 10% to count his discount and store it as well. This step can be skipped as I can do it manually.
In the above the most important is first 2 steps because I want to keep a record on which date he paid how much.
I am very good at PHP-MySQL and I can make a application for it, the bit where I am caught is how does this card barcode reading works? and how the swap will send data to my application. or I need to hire somebody for custome coding in VB or .Net etc?
any input is highly appreciated.