QR code is short for “Quick Response code”, and is defined as a type of barcode in the shape of a square. These barcodes can be scanned by smartphones and will display information.
These barcodes are a scannable box that provide fast access to things like a website, contact data, etc. For cryptocurrencies, QR codes are a quick way to enter a public address so cryptocurrency can be sent.
The phrase “QR code” is actually registered with the US government as a trademark by DENSO WAVE INCORPORATED.