A smart card reader in a laptop is a small machine that can read a special card. It lets you use the card to do things on your computer, like logging in or making secure transactions.

But many government employees aren’t issued an approved card reader device that lets them use these cards at home or remotely, and so turn to low-cost readers they find online. What could go wrong?

If you have a smartphone -- be it an iPhone or an Android-powered phone -- you can use a portable card reader to take credit card payments anywhere you can get an Internet connection. Smartphone ...

The U.S. Army and Booz Allen Hamilton have given a thumbs-up to the security of the new smart card reader for the Blackberry. The cool device can be worn on a lanyard, holds a Common Access Card or ...

If your computer doesn't have a slot for a specific media card, you can use a digital media card reader to provide expanded compatibility.

The Arduino talks to a USB card reader using a USB host shield. Then it communicates with the PLC using an RS232 link and the DF1 protocol that most Allen Bradley PLCs understand.