Impinj Gen2X is an advanced, standards-compatible enhancement to the RAIN RFID (GS1 UHF Gen2) standard that improves tag read range, increases inventory speed, boosts security, and lowers overall solution costs. Developed by Impinj, it is designed for challenging environments in retail, logistics, and manufacturing, allowing for faster, more accurate, and secure tracking of items. Gen2X is built into tags using the Impinj M800 series endpoint ICs and supported by a wide range. 

Main Features and benefits of Gen2X RFID include:
    Improved Performance: Offers extended tag read ranges and faster inventory counting, reducing labour costs.
    Enhanced Reliability: Better readability for small, embedded, or hard-to-read items (e.g., in cosmetics, food) and improved resistance to electromagnetic interference.
    Increased Security: Features like Impinj Endpoint IC Verification help detect counterfeits, and "Protected Mode" enhances consumer privacy by hiding tags until authorised.
    Operational Efficiency: Minimises stray reads at retail self-checkouts and improves accuracy at dock doors, preventing mis-shipments.
    Compatibility: Fully backward compatible with existing GS1 UHF Gen2 and ISO/IEC 18000-63 standards. 

Technical Specifications of Impinj RFID UHF Integrated Circuits (ICs):
UHF IC             TID     EPC         User Memory     Read Sensitivity
Impinj Monza 4QT     96 Bit     128 Bit     512 Bit     -22 dBm
Impinj Monza 4E     96 Bit     496 Bit     128 Bit     -22 dBm
Impinj Monza 4D     96 Bit     128 Bit     32 Bit         -22 dBm
Impinj Monza 4i     96 Bit     256 Bit     480 Bit     -22 dBm
Impinj Monza 5         96 Bit     128 Bit     32 Bit         -20 dBm
Impinj Monza R6     96 Bit     96 Bit     --     -22.1 dBm
Impinj Monza R6-A     96 Bit     96 Bit     --     -22.1 dBm
Impinj Monza R6-P     96 Bit     96-128 Bit*     32-64 Bit*     -22.1 dBm
Impinj Monza X         96 Bit     128 Bit     8 KBit         -21.6 dBm
Impinj M730         96 Bit     128 Bit     --         -24 dBm
Impinj M750         96 Bit     96 Bit         32 Bit         -24 dBm
Impinj M770         96 Bit     128 Bit     32 Bit         -24 dBm
Impinj M775         96 Bit     128 Bit     32 Bit         -24 dBm
Impinj M780         96 Bit     496 Bit     128 Bit     -23.5 dBm
Impinj M781         96 Bit     128 Bit     512 Bit     -23.5 dBm
Impinj M830         96 Bit     128 Bit     --         -25.5 dBm
Impinj M850         96 Bit     96 Bit         32 Bit         -25.5 dBm