Using Element Payment Services we can have a customer create a payment account and save away the PaymentAccoutnId token for future use. We can then use this payment information to simplify the checkout process for each user.
Imagine that a user can create as many payment accounts with different credit card information attached to each one. The only information that SimpleWeb, Prophet 21 or you have access to is the type of card, the last four digits and the expiration date, all needed to identify the card. One of these accounts can be set as a default payment account an used as part of the express checkout feature, or customers can be presented with a list of cards to choose from.
This reduces the data entry that a customer has to perform during checkout and greatly simplifies the checkout process.
This feature is expected to be ready in teh first half of 2012.