I’ve seen things that make the iPhone a card reader, such as the Square and Mophie Credit Card Reader. Apparently, Visa wants to launch Visa Mobile application for trails in Europe. Unfortunately, it requires an external attachment, the iCarte accessory from Wireless Dynamics. With the app and the dongle users can start trying out …

This is the VeriFone, which is one of several devices that I have seen that can read credit cards for the iPhone. It is available at Apple retail outlets for all iPhone 3G and 3GS handsets. It comes with a built-in stylus, and is free along with the app. Actually, it isn’t …

Mophie, makers of the Juice Pack Air for the iPhone, is apparently working on a credit card reader for the iPhone. Some of you might find this device similar to the Square from Twitter founder Jack Dorsey. If you have, then you will probably have to admit that the credit card reader from …

Twitter co-founder and chairman Jack Dorsey is working on some iPhone hardware known simply as the Square, which can turn an iPone into a credit card reader. Check out the details after the jump. The innovation is in a small, plastic card reader that fits in to the headphone jack of an iPhone (or iPod [...]