Take Secure Card Payments Using Your Mobile
It is easy to use and I love it as you never need to touch your customers card, and they never touch your iPhone.
I have been selling my books this way at various networking events. I often forget to charge it, so I now keep a spare mini USB lead in my bag, so I can charge via my computer.
With Worldpay zinc, you can also take credit card payments over the phone, or send someone a link so they can pay you online. The rates are also cheaper than Paypal. No brainer!