Splitting the bill with Microsoft Surface

Today, Microsoft announces their latest product, Microsoft Surface. Surface is basically a powerful computer disguised as a table with a interactive surface. Surface automatically detects objects, and can interact with them.

One of the demo videos on the Surface site shows how this product can be used in a hospitality environment. The video shows a group of friends having a drink, and when one of the persons lays his credit card on the table, Surface automatically reads the card (how?) and displays information about the card holder:

The center of the table shows images of all the food drinks consumed at the table, and each person can simply drag an item to their credit card and split the bill:

Surface is a very neat product, but at $10.000 really only an option for very trendy places with few tables.