Event QR Checkin Codes would be great for MOBILE COUPONS!
Instead of using the QR codes for an event checkin, I would love to use these as mobile coupons. If there was a way to automate the creation and then sending them either via text (MMS) or via email or both... Then the QR code could be scanned to validate the coupon, and a tag could be added to the contact record saying "REDEEMED" or something of that sort to limit the use to 1.
It is basically a happy marriage between SMS/MMS, Event Checkin, and SmartLinks:
1) Coupon is created and automatically sent out to the tagged recipients via email or MMS. There could be a LIMIT and EXPIRATION in place.
2) They present their smart phone to have the QR code scanned either from their email or from their text message.
3) SmartLinks checks the expiration and limit, and if both are in order presents a big OK to show the coupon is good. Otherwise, it displays the appropriate error message (expired, already used, etc).
Everything is pretty much in place already, just needs to be tweaked for this idea. =)