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I'd love an in depth sorry on this. How did the coupons scan correctly?
by syspec 5y ago
I'd love an in depth sorry on this. How did the coupons scan correctly?
- hnac12 5y agoThere isn’t a central db of valid coupons, the discount and product barcode are encoded in the coupon barcode
- lxchase 5y agoI went a little more in-depth about how manufacturer coupons work in a comment above. Long story short there isn’t any “server side” verification. As long as you have the correct format, anyone can create a barcode that will scan and give you the offer you encoded. But you will be committing fraud (don’t do it) and it does get checked.