If you're trying to log into Facebook and it's not sending a security code, check your spam folder or request the code to be delivered another way. You should also try restarting the app and your ...

QR codes — or "Quick Response" codes — are square-shaped barcodes that can be scanned by mobile devices. They are used for a variety of applications, from pulling up a restaurant menu to directing ...

Most readers will have at some point received a two-factor authentication code delivered to them by SMS text message. Many apps and websites send the one-time codes to confirm that the person ...