When a gadget company sells its products for big bucks, it has every reason to refine its designs on an ongoing basis, making them ever more tempting to paying customers. But if the gizmo in question ...

The Square payment system hasn't exactly had a smooth road to availability, with deliveries put on hold back in June due to an ominous "credit processing and risk issue." If that didn't scare you away ...

Accept credit cards on your phone using mobile readers and apps from Square, PayPal, or Chase. Download the app, connect a reader and start processing payments.