ISLAMABAD: Pakistan Polypropylene Woven Sack Manufacturers Association (PPWSMA) has requested Prime Minister Shehbaz Sharif to make QR-Code printing on plastic bags to ensure their recycling. In a ...
It's the invisible ink of childhood, all grown up and with a serious purpose. Researchers have developed a high-tech ink, which they used to print QR (quick response) codes that are invisible in ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback