Select your localized edition:

Close ×

More Ways to Connect

Discover one of our 28 local entrepreneurial communities »

Be the first to know as we launch in new countries and markets around the globe.

Interested in bringing MIT Technology Review to your local market?

MIT Technology ReviewMIT Technology Review - logo


Unsupported browser: Your browser does not meet modern web standards. See how it scores »

{ action.text }

Sandra R. Hughes

Position: Global privacy executive, Procter and Gamble

Issue: Radio frequency identification (RFID) and privacy. RFID tags could help manufacturers and retailers track shipments and inventory more quickly and accurately. But consumers worry their buying habits will be tracked as well. Can companies ensure buyers’ privacy?

Personal Point of Impact: Heads Procter and Gamble’s global privacy council, setting and enforcing the company’s policies on the privacy of individuals’ personal information; member of the public-policy steering committee of EPCglobal, a nonprofit industry organization that sets standards to support the use of RFID to track consumer products in the supply chain

Technology Review: How would RFID work to track products?

Sandra Hughes: It’s a technology that involves a silicon chip and an antenna, which together we call a tag. The tags emit radio signals to devices that we call readers. One of the things that is important to know about is EPC. Some people use RFID and EPC interchangeably, but they are different. EPC stands for electronic product code; it’s really like an electronic bar code.

TR: So manufacturers and distributors would use EPCs encoded in RFID tags to mark and track products? Why’s that any better than using regular bar codes?

Hughes: Bar codes require a line of sight, so somebody with a bar code reader has to get right up on the bar code and scan it. When you’re thinking about the supply chain, somebody in the warehouse is having to look at every single case. With RFID, a reader should be able to pick up just by one swipe all of the cases on the pallet, even the ones stacked up in the middle that can’t be seen. So it’s much, much faster and more efficient and accurate.

TR: Why is that speed important?

Hughes: We want our product to be on the shelf for consumers when they want it. A recent study of retailers showed that the top 2,000 items in stores had a 12 percent out-of-stock rate on Saturday afternoons, the busiest shopping day. I think the industry average for inventory levels is 65 days, which means products sitting around, taking up space for that time, and that costs about $3 billion annually. Often a retail clerk can’t quickly find products in the crowded back room of a store to make sure that the shelves are filled for the consumer, or doesn’t know that a shelf is sitting empty because she hasn’t walked by lately. With RFID, the shelf can signal to the back room that it is empty, and the clerk can quickly find the product.

TR: Are these tags being used already?

Hughes: A number of tests have been and are continuing to be done to evaluate and improve the technology. Primarily it’s been at the case level and pallet level, but sometimes it will be to the shelf, because in the end, the goal is to make sure that the right product is on the shelf for consumers to buy when they want it. There’s a lot of learning that still has to go on with the reliability of being able to read these tags, because if you’re going to use them to track products through their life cycles, you need the information to be accurate.

TR: Does that mean tracking a product even after a buyer has brought it home?

Hughes: No. Our focus is making sure the product’s there on the shelf. So to me, that’s the life cycle.

TR: How long will it take until we see these tags regularly?

Hughes: That’s going to be spread out over several years. What’s moving it along are mandates by retailers like Wal-Mart, Target, Metro in Germany, and Albertsons. The Wal-Mart mandate is that by January, their top 100 suppliers would be tagging pallets and cases of all of their products. In the next year or two, consumers are going to be seeing tags on cartons for big items, like computer equipment or furniture, for example. But for individual items like shampoo bottles, I think we’re talking eight to 10 years out.

TR: Some of the retailers, such as Wal-Mart and Metro, have seen consumer backlash over privacy concerns. Why is that?

Hughes: The most widely publicized privacy concern is that the EPC would be linked to personally identifiable information. The tags themselves don’t have any personally identifiable information, but the fear is that the number will be linked somehow to personal information. The other fear is that tracking or surveillance will go on outside the store-that an individual could be tracked to their home or so on because they have a tag on one of the products that they’ve purchased.

0 comments about this story. Start the discussion »

Tagged: Computing

Reprints and Permissions | Send feedback to the editor

From the Archives


Introducing MIT Technology Review Insider.

Already a Magazine subscriber?

You're automatically an Insider. It's easy to activate or upgrade your account.

Activate Your Account

Become an Insider

It's the new way to subscribe. Get even more of the tech news, research, and discoveries you crave.

Sign Up

Learn More

Find out why MIT Technology Review Insider is for you and explore your options.

Show Me