Functional specification of SMS couponing

Introduction
Sms couponing is to receive on your cell phone a benefit/discount using sms when buying a product.

How it works
A discount on a product is offered to the consumer in a commercial displayed on screen in a store, shopping mall or billboard. The consumer responds by sending a sms with a code to a short code (both shown in the commercial) (f.e. code 14345 to short code 4040). In reply the consumer receives a sms coupon on his cell phone. The message send by the commercial creates instant mobile response. The consumer validates the sms coupon at a validation terminal in the store and receives at the terminal a barcode coupon.

Instant satisfaction
This barcode coupon is scanned by the cashier at the counter when purchasing the product, and instantly gives a discount on the product.