You can lock, unlock, permanently lock, and permanently unlock a memory bank of the tag.
The detailed definitions of these 4 operations can be found in the EPC Global standards
document which can be found at the EPC Global website:
https://www.gs1.org/epcrfid/epc-rfid-uhf-air-interface-protocol/2-0-1. On the page, press the
button showing the latest air interface protocol and download the pdf file. More details can be
found on Appendix G.