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Is implantation being performed in the United States? —Name withheld ——— Not unless people pay to have it done to themselves, no. —Mark Roberti, Founder and Editor, RFID Journal

Is it possible to read a tag passing by at such a high speed? —Name withheld ——— To answer your question, I reached out to an engineer at Impinj, which manufactures passive ultrahigh-frequency (UHF) RFID chips based on the EPC Gen 2 air-interface protocol. According...

How can we register when approximately 30 passive tags are leaving or entering a single field? —Name withheld ——— Passive tags, both high-frequency (HF) and ultrahigh-frequency (UHF), have anti-collision protocols allowing tags to be read in succession. This happens...

I have seen you mention a maximum read range of 300 feet. Are there any solutions with a longer range? And can some systems be tied into GPS technology, working together to achieve a more accurate and longer range? I assume that anything can be done, but that it would...

Or is it based on competitive pricing, order sizes, data-holding capacity and other parameters? I am aware of the difference between active and passive tags, but not about inter-category pricing. —Rohini S Vangury ——— Rohini, There are no standards for pricing. What...

And does it matter if they're open or closed? —Jonathan ——— Jonathan, When passports are open, they can be read from a distance of 1 foot, using an RFID reader conforming to regulations in most countries (some nations limit the power output of readers and other...

Please describe a few of the obstacles that companies face. —Name withheld ——— There are several challenges that I have consistently heard about from end users. One involves reading only the tags you want to read while driving a forklift truck around a warehouse. At...

Please explain how this can be done. Thanks. —Name withheld ——— To answer your question, I reached out directly to Alien Technology. Here is the company's response: "You cannot connect an external DC power supply of any type to a Higgs 3 tag. The internal circuitry is...

I am conducting research for a new project, and recently saw the AD-110m5 ultrahigh-frequency RFID inlay listed on Avery Dennison's Web site. The site does not mention the read range for this type of tag, however. Is there a tag available, similar in size, that would...

LF tags are commonly used in fisheries research, but would it be feasible to utilize higher-frequency tags, such as battery-assisted tags with greater read ranges, in an environment filled with liquid? —Name withheld ——— Low-frequency (LF) tags employ inductive...

Do you know if there is currently any reader available that would provide audio feedback about the items that it reads? —Name withheld ——— Motorola's handheld RFID readers have a Geiger counter function. As you get closer to a tag, the unit beeps louder and more...

I am a student at Mepco Schlenk Engineering College, in India, and am working on a project involving an RFID collision-prevention algorithm, based on an IEEE transaction paper. What sort of RFID reader would be suitable for our project? —Balaji G. ——— Dear Balaji, If...