A reader, Billie, writes in, “I got free a ‘card-reader’ stick. Don’t know how to use it. When I plug it into a port, nothing comes up to show it is there.” Card readers are typically small USB ...

It’s a problem common to every hackerspace, university machine shop, or even the home shops of parents with serious control issues: how do you make sure that only trained personnel are running the ...

As helpful as a Square Reader may be for purchases at trendy stores, you'll want to watch out -- in the right circumstances, they can also be used to steal your credit card info. Security researchers ...