[djjose]

If you have just one or two cards, I doubt you'd ever see the benefit. However I'm dying for a replacement for my bevy of cards:

- my personal amex

- my business amex

- my debit cards (multiple banks)

- my store cards (multiple)

- all my other ID-like and reward cards (ex: Costco, Avis, etc.).

[saddino]

You can already replace the last two groups with a loyalty card aggregator app like CardStar and its ilk.