Specifically designed for demanding itemlevel deployments, Impinj s Mini-Guardrail reader antenna operates effectively at read distances of 7.5 cm of less. This antenna is the ideal choice for access control, ticketing, document control, high-speed encoding stations, packaging lines, or any application requiring high reliability and a constrained read zone. Because of its optimized short-range performance, the Mini-Guardrail antenna is virtually immune to the RF-transmission limiting effects of items such as liquids, powders, and metallic packaging.