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A Swiss company is selling socks containing NFC tags that let a wearer match pairs perfectly, as well as keep track of where socks have been.

What can I do to make sure such a system is accurate? —Name withheld ——— Radio frequency identification provides a faster and more accurate way to count items than using either bar codes or a manual paper-and-pencil method. At the very least, RFID should, if a system...

Are the tags susceptible to accidental memory loss if removed from a reader field during the writing process? —Name withheld ——— To answer your question, I reached out to Victor Vega, NXP Semiconductors' director of RFID solutions, who says that tag data would not be...

Leslie Hand, an analyst for IDC Community Insights, says a company’s key relationship is with the company providing consulting, integration and software.

What type of encoding should we use? —Name withheld ——— To answer your question, I reached out to Reza Shibli, the director of product marketing at Tagstone, a leading RFID solutions provider located in the Middle East. Here is Reza's reply: "While we have never had...

I am looking for an active tag with a maximum weight of 10 grams (0.4 ounce) to fit on small flying birds. Do you know of a product that would meet this requirement? —Name withheld ——— Guard RFID offers the 8-gram (0.3-ounce) AT-1BLF Article Tag, which might be...

And how quickly would a real-time location system pay for itself? —Name withheld ——— "Affordable" is defined as that which is within one's financial means. An RFID system could cost as little as a few thousand dollars to a million or more, depending on the particular...

Please provide some examples of the types of products being monitored. —Name withheld ——— In July 2010, Walmart announced that it was re-launching its RFID efforts, and that it would focus on tracking individual items using complex stock-keeping units (SKUs). The...

The popular television series recently focused on how Gerry Weber International is using radio frequency identification to track clothing.

As a follow-up question to your answer concerning the impracticality of utilizing an RFID-enabled smartphone to locate a golf ball (see Could a Smartphone Track a Miniature RFID Tag Placed on a Golf Ball?), is the technology suitable for locating an item that is, say,...

Do you know of any quality suppliers of high-frequency RFID interrogators for outdoor use—able to operate within temperatures up to 50 degrees, as well as waterproof and dustproof—with a read range of 2 centimeters to 4 centimeters (0.8 inch to 1.6 inches)? We need a...

The iPhone 5 has a number of new features, but Near Field Communication is not one of them.