Well, the "QR" stands for "Quick Response," meaning a code that can give quick access to information. The QR code is actually a 2D version of a barcode, first invented in 1994 by the Japanese company Denso Wave. The QR Code is primarily made of black and white square pixel patterns. QR codes can be used to share various kinds of information with users, such as links to websites, Skype meetings, Zoom meetings, phone numbers, and more.
Another question that arises is how can we read QR codes and extract information from them? To read QR codes, there are free apps in app stores, and nowadays almost all phones are capable of reading QR codes by default through the camera app. You just need to open the camera app on your smartphone, hover it over the QR code, and the phone will read it for you and perform the desired operation, such as dialing a phone number or adding a contact to your list.
Useotools All in One QR Code Generator is a one-click tool that can generate a variety of QR codes instantly, for free and without asking for any payment or registration. Currently, our tool supports QR code generation for links, text sharing, e-mail, phone numbers, SMS, WhatsApp, Skype, Zoom meetings, Wi-Fi, v-cards, PayPal links, Bitcoin address sharing, and more. To use the tool, simply click the button for the type of code you want to generate, input the information, customize the code with options such as color, design, logo, and frame, and then save and download the QR code in PNG, SVG, or PDF formats.