Wallet fully loaded? Let's see: Visa, American Express, MasterCard, cellphone…
Yup, its a phone the size of a credit card, only 0.58mm thin (less than a quarter inch, about the width of three credit cards) and weighs just 1.3 ounces. Appropriately it's from a company called Real Phone Card.
As you can see, an advertising message can be printed on the phone's face. Spec-wise, it's a dual band GSM GPRS, comes with either a color or monochrome screen, gets around 200 minutes of talk time, and there are canned text messages included. You dial it by navigating an onscreen dialpad, but it also has built-in voice dialing, which happens to be language independent. Plus it's waterproof.
Available in June or July, the Phone Card will hit India first, then maybe the U.S.