RFID in the Warehouse can be useful by adding RFID tags to all items and identifying the items.
Example of a RFID tag

These tagged products are read by receiving and interpreting magnetic waves transmitted by the chip, with the use of an RFID antenna and reader. Information is then transferred to the system. This enables identification of the item without scanning a barcode or manually searching for an item based on its pasted label.
RFID can be read through concrete, so some warehouse operators bury tags in the floor to guide and track RFID-enabled forklifts. The application provides a real-time view of locations, a data point which software application use to improve asset utilization and measure productivity.
RFID readers also can be mounted on forklifts or at key storage area entry/exit points to monitor inventory movements. Continual, unattended monitoring can be used to supplement bar code-based inventory control procedures to provide an added degree of visibility to high-value goods. The practice can produce near 100 percent inventory accuracy and eliminate the need for cycle counts and reduce out-of-stock emergencies.
Benefits of RFID for Companies with Warehouse Distribution Operations
RFID solutions from Symbol provide real-time information by automatically detecting product movements throughout the distribution process. RFID technology provides real-time inventory visibility while minimizing the need for manual checks, allowing you to:
Track pallets, cartons and containers with unmatched speed and accuracy
Automate product identification and authentication
Increase speed and efficiency along with fewer errors throughout the entire distribution process
Improve efficiencies for inventory control and reporting
Gain greater control over costly material handling assets
Improve inventory visibility to feed enterprise systems
Reduce stock levels resulting from improved inventory management
Automate reporting of all material moves both inbound/outbound and within your facility
Increase overall labor productivity
Articles on RFID picking:
rfidjournal.com/article/articleprint/496/-1
rfidjournal.com/article/articleprint/366/-1/1/