Transactions is a new iPhone App that I wrote with Ian Baird for accepting credit cards on the go. This is the second App that we have released jointly, the first being Handshake.
Transactions was a really interesting project despite some difficult hurdles. I ended up rewriting the entire user interface no less then 3 times including 11 revisions along the way. We put a lot of effort into the UI in order to make it simple enough for any retail clerk to master in minutes but powerful enough to handle the complex nature of payment processing. In the end I am very happy with how it turned out.
We also have a couple of firsts on the iPhone technologies with Transactions. We had a major problem of easily entering login credentials for PayPal™ and Authorize.net™. Ian developed a tool for solving this problem that we called the Credentials Tool, it allows you to copy and paste your account information into a website and have an email sent to your iPhone that will automatically configure the App. Founded on this same technology we allow you to transfer settings from Transactions Lite to Transactions.
Transactions Lite allows anyone to try out Transactions with no risk, it does have a limit of 2 Transactions per 12 hours though. Transactions sells for $29.99 and is available in the US App Store. International versions will be available as soon as possible.