For the longest time we’ve been using UPC bar codes to store strings of information in a compact space on both product labels and people in dystopian sci-fi movies. But as our needs grew and became ...

Public Works Department (PWD) has introduced a QR code-based system that allows citizens to rate road works carried out by ...

Recently [mit41301] wondered about increasing the data capacity of QR codes, and was able to successfully triple the number of bits using color. He chose the new rectangular micro QR code (rMQR) ...

What if every store had a bar-code sticker on its window so that you could pull out your iPhone, wave it in front of the bar code and get all sorts of information about that business—the telephone ...