The term colonialism is frequently used to describe the settlement of North America, Australia, New Zealand, Algeria, and Brazil, places that were controlled by a large population of permanent European residents.
QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached.
MICR code (Magnetic Ink Character Recognition Code) is 9 character long code printed on bottom of the cheque. It could include information like document type, bank code, bank account number, cheque number, cheque amount etc.