The School of Mines & Technology in South Dakota is testing a new system that uses biometric readings for purchases at campus shops. After setting up an account, customers can then make purchases simply by pressing their fingers onto a reader. Security features include a pulse monitor that checks to see that the print is not simply a photo.

Lana Del Rey has had her videos bought and paid for by products several times now. Her latest video, "Burning Desire" also looks like a long-form jaguar ad, part of a six-figure contract with the car company. Do her fans know this, or even care? In the future, is this how most music videos will be funded?

American Express card holders can now purchase select products via Twitter. After syncing your Amex card to Twitter, tweet a specific product hashtag, AmexSync will send you a reply with a confirmation code, tweet that and you've made a purchase. For now, orders will come with free two-day shipping.

Barbie Cafe, which is licensed by toy giant Mattel, will feature hot pink sofas, tables shaped like high-heeled shoes and the staff will wear pink Barbie logo T-shirts, armbands, glitter and tiaras. In addition to dolls, Barbie-themed clothing, accessories and furniture will be sold in the cafe, which Mattel hopes will draw Barbie fans from China...