Micro QR Code
Micro QR Code is a very small QR Code that fits applications that require a smaller space and use smaller amounts of data, such as ID of printed circuit boards and electronics parts, etc. The efficiency of data encoding has been increased with the use of only one position detection pattern.
The capacity of Micro QR Code symbols at the lowest error correction level is:
Numeric data 35 digits
Alphanumeric
data 21 characters
Byte data
15 bytes
Pattern strings