what is UHF RFID inlay user memory 512 bit Alien Higgs 3 E

The passive UHF RFID inlay Alien Higgs3 UHF RFID IC which is compliant EPC Gen 2 and ISO 18000-6C. Alien Higgs3 UHF RFID inlay provide 512 bit user memory and pre-programmed with a unique , unalterable 64-bit serial number (ideal for authentication). Alien Higgs3 UHF RFID inlay which password protected read and write support capabilities to prevent unauthorized viewing and modification of the tag’s data.
Typical applications for pallet placard labels, apparel hang tags, shipping labels, asset management, file folder labels and application on plastics and so on.

Features:
-EPC Gen 2 (v1.2.) compliant
-ISO/IEC 18000-6C compliant
-Worldwide RFID UHF operation (840-960MHz)
-Higgs -3 IC with 800-bits of Nonvolatile Memory
-32-bit TID
-64-bit Unique TID
-96-bit EPC Memory, extensible to 480-bits
-512-bit User Memory
-32-bit Access password
-32-bit Kill password
- Pre-programmed having a unique, unalterable 64-bit serial number (ideal for authentication)
-User Memory can be Block Perma-Locked
-User Memory could be Read Password protected in 64-bit blocks, prohibiting  unintended Reads without an access password
-Supports all Mandatory and Optional Gen 2 commands including item level  commands
-Custom commands for prime speed programming
-Obtainable in high-yield, RFID inlay high-capacity dry/wet inlay rolls for high volume  converting processes

http://www.nfcandrfid.com/products_info/UHF-RFID-inlay-user-memory-512-bit-Alien-Higgs-3-E-325328.html