We've been intrigued by the Square Payment System since it first ditched its Squirrel costume back in 2009, and now it appears we're on the eve (or eve of the eve, or pretty close anyway) to its release for not only the iPhone, but for the iPad and for Android as well. The software is said to be hitting App Stores and Markets this week, working with a sugar cube-sized card reader that pops into the 3.5mm headphone jack, a device that the company is giving away for free to those who
