Impinj

xArray uses Impinj’s phase-based Location algorithm to triangulate each tagged item’s position within 2-3 m using the phase difference measured across its eight integrated antennas, without requiring multiple gateways per zone. A single xArray reads 1,100 tags per second, keeping pace with high-density pharmaceutical dispensing cabinets and retail stockrooms where traditional portal readers create bottlenecks. Low-profile 61 cm aluminium housing installs flush with drop ceilings using standard 2×2 T-bar mounting; PoE+ power eliminates local electrical work. Impinj ItemSense cloud software aggregates xArray feeds across a facility, maintaining a continuously updated item location database queryable via REST API. Used in Amazon Go cashierless retail, hospital tracking, and semiconductor fab WIP management.