what is QR code ?

What is QR code

• this time a post is about what is qr code , you can not see my other post to what is bar code teach to see.
• So let's start..

• the full form of QR code is (Quick Response code).
• this Qr code matrix bar code first designed in 1994 for the automotive industry in japan .
• the best bani fit is qr code is alphanumeric characters stored in 4296 max limit.
• there are 5 type of qr code is used for 2018 .

1. Qr code model 1 and model 2.
2. Micro QR code.
3. IQR code.
4. SQR code.
5. Frame QR code.

• this type is divided for QR code feature lick frame (frame means company in QR code center  ).
• SQR code means (Secure QR code or private qr code).