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 document which
can be found on the EPC Global website:
https://www.gs1.org/epcrfid/epc-rfid-uhf-air-interface-protocol/2-0-1. Once there, press the
button showing the latest air interface protocol and mouse click to get the pdf file. More details
can be found on Appendix G.