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Warehouse & DC Management: RFID surges ahead

Proponents have changed the conversation and have started tagging at the item level in what the industry is now calling a “source-to-store” approach.
By Maida Napolitano, Contributing Editor
April 01, 2012

Much improved readers and tags
While spotty read performance and stray tags may have previously prevented many from adopting the technology, significant hardware and software developments have changed many minds. Readers have been able to capture tag information from longer distances consistently. Mike Maris, senior director for Motorola, notes how their more ruggedized FX9500 next generation RFID readers have handled increases in volume of items moving through warehouses and the reading of tags in densely packed pallets.

“Based on customer feedback, this RFID reader offers a greater level of sensitivity—being able to read tags in more challenging environments and on more products—and provide more configuration options that can be tuned within harsh industrial situations,” says Maris.

Intermec’s latest IF2 network readers, released in early 2011, have longer read ranges and the ability to read more tags, faster. According to Kurt Mensch, Intermec’s principal product manager for RFID, its Advanced RFID Extensions (ARX) can determine the motion of tags to identify tags of interest and discriminate surrounding tags. “This feature provides customers and software integrators with a valuable tool to eliminate stray tags as they move through a portal,” says Mensch.

Each year it’s not uncommon to see smaller, more powerful tags introduced into the market for a growing number of uses.

Inlaid in different forms and paper mediums, they can now be easily attached to a wider range of assets—from airplanes to sheets of paper or even loads with liquid and metal—and still be consistently captured by today’s readers.

Just a few weeks ago, Omni-ID launched a new tag that combines RFID with e-paper technology. Ed Nabrotzky, Omni-ID’s CTO and marketing vice president, calls it “visual RF tagging.”

“Visual RF tagging allows wireless tracking of items like other active systems, but adds the element of dynamic visual cues for the worker,” says Nabrotzky. The tag combines RFID with a display that can show product locations, pick instructions for an order, or any other human-readable information, allowing the system to instantly communicate to workers new tasks to perform on the fly, such as quality holds or re-routing of orders.

Convergence of technologies
There has also been considerable innovation in how both RFID software and hardware are being used not only in isolation, but also as part of other wireless technologies to minimize inaccuracies while maximizing efficiencies within the DC.

The Sky-Trax RFID system, offered by TotalTrax, automatically captures and tracks the physical movements of a lift truck fleet by “combining different forms of data collection devices—optical, RFID, position based—and load detection sensors, combined with optical positioning and our software,” according to Sarah Brisbin, marketing director for TotalTrax.

This “smart truck” dramatically enhances WMS capabilities based on real-time knowledge of the actual location of each lift truck, optimizing operator movements and task interleaving.

For a more affordable RFID deployment, Intermec offers its IP30, which according to Mensch, is the only long-range handheld RFID reader on the market that combines five wireless technologies in one device: RFID, wireless WAN, GPS, Wi-Fi, and Bluetooth. “This flexibility allows a single reader to be used for any application, from asset management inside the warehouse to trailer management in the DC yard,” he adds.

To help add to this new momentum, tag costs have been declining and are expected to be driven down with widespread adoption by retailers at the item-level. In fact, just a small decrease in cost can have a substantial impact. A retailer, for example, who ships 100 million units per year can save as much as $1 million with just a penny saved per tag.

According to Liard, ROI times have shrunk over the last few years. “There is increasing evidence that it’s been less than a year.”

RFID’s Catch-22
While there are more drivers than ever pushing RFID’s adoption, not all are convinced. Andraski believes a lack of education is holding back companies from investing and innovating. One of the biggest challenges, he says, is that companies view RFID initiatives as a source of competitive differentiation; thus, it’s been a challenge to get users to share their experience and their ROI modeling.

“Others can’t learn if they don’t share their success story in a public fashion,” says Liard. “It’s a Catch-22 for RFID.”

About the Author

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Maida Napolitano
Contributing Editor

Maida Napolitano has worked as a Senior Engineer for various consulting companies specializing in supply chain, logistics, and physical distribution since 1990. She’s is the principal author for the following publications: Using Modeling to Solve Warehousing Problems (WERC); Making the Move to Cross Docking (WERC); The Time, Space & Cost Guide to Better Warehouse Design (Distribution Group); and Pick This! A Compendium of Piece-Pick Process Alternatives (WERC). She has worked for clients in the food, health care, retail, chemical, manufacturing and cosmetics industries, primarily in the field of facility layout and planning, simulation, ergonomics, and statistic analysis. She holds BS and MS degrees in Industrial Engineering from the University of the Philippines and the New Jersey Institute of Technology, respectively. She can be reached at .(JavaScript must be enabled to view this email address).


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