Wonder about square signs you see everywhere?
What are these signs?!
- They are called QR [Quick Response] codes. Very similar to [UPC] bar codes that we are all familiar with already. Their purpose is to transmit information to a machine when a scanner scans them. [like telling the register at the grocery store which item you are purchasing]
So, what’s the difference?
1 note
-
devarshi reblogged this from techwonder
-
techwonder posted this
