QR Codes have taken over the cities. It's hard to walk a block without seeing them. Stores, bars, posts, and even turnstiles have adopted the technology.
They are practical and friendly. Pointing the cell phone camera to perform an action seems like a present from the future, but the quick response codes are not a new invention.
They were created in 1994, but until a few years ago, they only fulfilled specific roles, such as marketing campaigns.
It didn't look like they would take over everyday life. The pandemic changed the scenario. Fear of the transmission of covid . . .