RFID and how it helps logistics?

• A. A barcode scanning technology with limited reach.
• B. A tag used only for security access.
• C. A data encryption standard.
• D. Radio Frequency Identification; enables real-time tracking and visibility of inventory and assets.

Answer: (D)

The idea being tested is how RFID provides real-time visibility of inventory and assets in logistics. RFID uses radio waves to read tags on items without needing direct line of sight, and it can scan many tags at once over longer distances. This lets a warehouse or distribution network continuously know where each item is, its quantity, and its status as it moves through receiving, put‑away, picking, packing, shipping, and even yard management. That real-time visibility speeds processes, reduces stock inaccuracies, and helps prevent loss or misplacement.

In contrast, barcodes require a deliberate scan of each item with a line-of-sight reader and are usually read one at a time, which limits speed and the ability to track multiple items quickly. The idea that this is just a security tag is narrower than what RFID offers, since RFID is widely used for inventory and asset tracking, not just access control. Finally, RFID is not a data encryption standard; while security can be built into RFID systems, the term doesn’t describe what RFID is or how it helps logistics.