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 ...

Different card reader models provide support for various types of cards, and all provide the ability to transfer data to and from the media cards.

To save the data as a CSV/OFX/QFX/QBO file, tap the Share icon in the upper-right corner of the screen, where you can opt to AirDrop it to another device such as your Mac, print it, or Save to ...

Credit card skimmers are devices that enable thieves to steal card data and use it for fraudulent purposes. They're often added to card reader devices to capture your information.

The data on a card is read and stored on a computer, then encoded as a WAV file using a C++ program. The iPod plays the WAV file with the data through a single-stage opamp amplifier connected to ...