But we didn’t stop there. To make it super easy for you to have your promo codes with you and and ready to share in Moscone and its environs, we’ve added Passbook support to Tokens.

Add the campaign pass to your Passbook and when you want to share a promo code with a new friend, they simply scan the barcode using Passbook on their phone. We then vend them an individual pass that’s valid for a single promo code. That token is marked as shared and reserved for the person who scanned it.

I love this app.