In this recent post, I described my disappointment in trying to use an iPhone application called CardStar in place of 
my plastic loyalty cards at the point of sale. The application allows you to key in account numbers for supported cards, then produces a screen based bar code which replicates the data available from card codes or magnetic strips.
When attempting to use this with my Jewel/Osco grocery preferred card, it failed to work, leading me to conclude that widespread adoption was far from certain. This evening I had a chance to try the application again, this time with my Blockbuster account. And it actually worked.
Perhaps Blockbuster stores have more advanced scanning equipment. No matter why it worked in this case, the experience would have been enhanced further by connecting my debit or credit account so I would not have to separately pay for my DVD rentals.
Assuming other cards may work as well as this example, you could say the application is redeemed. Just like like mobile codes at the point of sale should.
