What is QR Codes?

You may have observed a square-shaped barcode sticker on a light pole covered in graffiti or on the reverse side of a business card.

This square-shaped, pixelated pattern is known as a QR code. It assists with app downloads and provides a way to view a restaurant's menu without physical contact. You can spot them on advertising billboards, as well as online on websites or social media platforms where they are used to advertise products and special offers.

Although the QR code was created in the mid-1990s, it wasn't until smartphones became widespread that it really took off. These devices made it possible to employ the QR code in a variety of innovative ways, rendering it a convenient method to exchange information, especially as a touch-free option during a pandemic.

Here is the essential information you must understand about QR codes.

##What is a QR code?

The QR code, created by Denso Wave's lead engineer Masahiro Hara in 1994, was first utilized by this Japanese firm, which is also a part of Toyota, for monitoring the movement of cars and components during production.

QR codes, an abbreviation for Quick Response codes, are a kind of barcode specifically designed for fast readability using digital gadgets such as smartphones. These codes encode data within a grid of pixels arranged in a square pattern, which allows them to be scanned vertically and horizontally, in contrast to traditional barcodes that are only scannable in a vertical direction.

QR codes have the capacity to hold up to 7,000 numerical digits or approximately 4,000 characters, encompassing both punctuation and special symbols. They are capable of representing data such as telephone numbers or web URLs. Depending on the specific data encoded, the pattern of each QR code is unique, altering the configuration of its dark squares.