Crowdsourced testing is a great way to connect with users and ensure that the product idea, design, implementation, and nonfunctional elements meet their expectations—or, hopefully, even exceed them. But like any other test effort, crowdsourced testing is both a science and an art. Here's how to do it effectively.

Despite our best efforts to replicate customers' behavior in our test automation suites, teams often forget about nonfunctional requirements. An important one is visual perception—how users see and feel each application they use. Visual regression testing can fill a significant gap in user experience expectations.

As payment methods have evolved from the traditional cash-based system to mobile systems, contactless cards are becoming more popular for their convenience and flexibility. Here's a primer on how this mobile payment system stores your card information, as well as the near-field communication technology behind it.