The drive offers a self-contained secure environment for online financial transactions that dodges malware that may already be on a computer. According to the article:
IronKey's device is essentially a virtual machine that runs its own pre-installed software on the device. IronKey has customized a browser based on Mozilla's Firefox product that can be configured to only visit certain Web sites.
IronKey plans to sell the device, which costs about $250, to banks, which would then pass it on to their customers.