How to Use a Phone As a Credit Card Terminal. 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 move pictures to an SD card using a PC, Mac, or Android phone, as long as you have the right card and equipment.

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 ...

Utilizing a microSD memory card adapter as needed, you can use these external readers to transfer data to and from your microSD card.

Learn how to use Square to accept credit card payments in person or online. Step-by-step guide for setup, hardware, invoices and more.

Businesses accept credit cards by choosing a processor, setting up a business bank account and selecting payment hardware like POS systems or mobile readers.

Scammers use legit-looking devices to steal your credit and debit card information at gas pumps, department stores, and ATMs.