Special codes are adapted to your requirements. They can be very different:

• Numerical (numbers only)
• Alphanumeric (numbers and letters)
• Encryption (cipher text becomes plain text)
• Various others

This coding can be printed or hidden in plain text. A QR code can contain hidden coding, whereby the known EAN code includes both plain text as well as a barcode. You can freely determine the length and content of the coding and adapt it to your processes. There is also the option of creating non-reoccurring random coding. In the following, you will see a QR code with a 10-digit alpha numeric code: 3G2dFOr9Q4