deliver coupon to smartphone via email or sms
 

I've got a mainstream site(wordpress) that was using printable coupons. I really want to start delivering these coupons via sms on demand as I see a high number of mobile users and feel having to print the coupon to use it is causing lower redemption rates vs # of coupons requested

Volume of SMS would be very low as this is a regional site.

Does anyone know of a service that provides this?

I've seen a local entertainment complex (driving range, virtual golf, rock climbing) use a QR code that redirects to the coupon, or image that the vendor accepts as the coupon, when shown on a cellphone.

Hmmm... I got something that does this in my phone.... hold please...

http://www.couponclipper.com

They have an app for that. It gives each user a specific ID number so they cannot reuse a one time coupon and the like.