QR codes were invented in Japan in the mid-90s to track components in car production and the quick response codes have proven very useful during the covid-19 era for example when in a restaurant as a customer you can just see the menu by scanning the Quick response code using your mobile phone and then you pay for what you ordered. However, this codes have mostly be used and adopted in the developed nations as opposed to developing countries which is does not really seem to be enticing. Do you think that Covid-19 was a technology revolution era ?