go here A QR code (short for Quick Response) is a specific matrix barcode (or two-dimensional code), readable by dedicated QR barcode readers and camera phones. The code consists of black modules arranged in a square pattern on a white background. The information encoded can be text, URL or other data.source site
antibiotics interaction with oral contraceptives Common in Japan, where it was created by Toyota subsidiary Denso-Wave in 1994, the QR code is one of the most popular types of two-dimensional barcodes. QR is the abbreviation for Quickenter
watch Response, as the creator intended the code to allow its contents to be decoded at high speed.
source url The technology has seen a large uptake in Japan and South Korea. However, in the west there has been a considerably slower adoption of QR Codes.