Square has announced that it has finally closed its Series D round, totalling $200 million, with investors including Citi Ventures, Rizvi Traverse Management, and Starbucks Coffee Company. It values ...

Mobile payment startup Square has updated its Register app with several new features. Both the iPhone and iPad versions of the app can now record and track payments, including checks and gift cards.

Square is a payment processing platform with built-in POS and business management tools for in-person and online sales. Here’s how it works, what it costs, and its ideal use cases. Key takeaways ...