A QR Code, short for Quick Response Code, is a type of matrix barcode that consists of black squares arranged on a white grid. In the context of transactions, QR Codes are used to facilitate the transfer of cryptocurrencies easily and quickly.When sending or receiving crypto, a wallet address is needed, which can be long and complex. Instead of manually entering this address, users can simply scan a QR Code. This code contains the wallet address and sometimes additional information, such as the amount to be sent.Using a QR Code helps reduce the risk of errors that can occur during manual entry. It also speeds up the transaction process, making it more convenient for users, especially in retail or peer-to-peer situations. As a result, QR Codes have become a popular method for handling crypto transactions, enhancing user experience and accessibility.