By RFID MFG Editorial Team · Updated June 14, 2026

In short: Doorway-mounted RFID readers record tagged goods automatically as they pass through, so movement is tracked without anyone scanning anything.

A gateway or portal is simply a set of RFID antennas mounted around a doorway, dock or corridor. As tagged items pass through, the reader logs the time, direction and location — creating an automatic chain of custody across a building or site.

This is ideal for tracking goods between zones, confirming shipments at dock doors, and monitoring high-value assets as they move around a facility, all without slowing people down or requiring manual checks.

Key takeaways

  • Automatic, hands-free recording at every doorway
  • Direction and timestamp give a clear chain of custody
  • Works for shipments, assets and inter-zone moves
  • Pairs with handheld readers for spot checks

How RFID MFG helps

RFID MFG provides the fixed readers, gate antennas and tags that make portal tracking reliable — selected and tuned for your item types, throughput and read environment.

Frequently asked questions

How far can a gateway reader detect tags?

UHF portals typically read tags across a 2–6 m doorway depending on antenna layout, tag type and the materials being tagged.

Can a portal tell which direction goods move?

Yes. With multiple antennas the system infers direction (in vs out), which is essential for chain-of-custody and shipment confirmation.