Why do you need encoding?
Rfid tags usually come with a unique factory ID which can be sequential or not depending on the type of IC. Normally these ID's are not in the desired format for the applications that are required when identifying products or people. We can offer you the tags prepared and encoded for your specifica application or we can give you tools to codify yourself.
Customization of tags
How can we encode in rfid tags?
How can we customize in NFC tags?