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 ...

Q: I’m using a Square credit card reader that attaches to my smartphone, but I’m finding that the transactions don’t always go through properly. Is there a certain smartphone or cellular service ...

Square, the payments company that makes it easy for small businesses to accept credit card payments wherever you go, is finally catching up with the times today by updating its tiny card reader.