Texas-based DeviceFidelity has created a protective case that adds the capability for NFC payments to the Apple iPhone 3GS and iPhone 3G. It's based on DeviceFidelity’s In2Pay microSD card, which slots into the case. This, in turn, fits on the iPhone and can communicate with a payment application. The In2Pay card uses Visa’s contactless payment technology, Visa payWave; trials are scheduled to start during the second quarter of 2010.
The In2Pay case, which has a micro USB charge/sync socket, is designed to stay attached to the iPhone. A press release about the case was first revealed a couple of weeks ago but was withdrawn hours later.