Email Marketing Question--Barcodes

Hello-

So I'm making an email list and sending multiple business's promotional materials (coupons, etc..) to a large email list.

I have multiple questions regarding incorporating barcodes into the emails......

1. What do the business's have to have to "register" the coupons into their computers/barcode scanner? Is it quick to do...?

2. What software do I need to make the barcode that works for that one scan and one scan only by each person on the email list?

I'll have like 500-1,000 people on this email list, and obviously I don't want the business's to get scammed by having customers who are getting the coupons printing multiple out and using it multiple times, so does someone know exactly what the process is for doing such?

Obviously this is kind of a broad question I am asking, but if you have knowledge regarding this, I really appreciate any information you can share!


Thanks,

Westy

I think the only thing you can do is write the software yourself so that when a coupon is used, it's marked as "used" in a database with the whole list of valid coupons.