QR codes are visual patterns that store data smartphones can read. AP Photo/Vincent Yu Among the many changes brought about by the pandemic is the widespread use of QR codes, graphical representations ...

While it is easy for people to read Arabic numerals, it is hard for a computer. Bar codes encode alphanumeric data as a series of black and white lines of various widths. At the store, bar codes ...

In the old days, programmers primarily used Notepad to write code. The old days have long gone after the rise of more sophisticated coding tools for HTML and everything else, but despite that, many ...