Discover what an OBD2 scanner is and how to use it to diagnose and fix car problems before they escalate into major repairs.

Your Android or iPhone can probably already scan QR codes. Here's how to do it no matter what phone you have.

You can scan a barcode with your iPhone by using a third-party app. Currently, there are no built-in apps that can read barcodes.

With contactless interactions more common than ever, there is more of a need to read a QR code than ever. Here's how to read QR codes using your iPhone, iPad, or iPod touch.