Is there a low-cost tag available on the market with such a range? —Name withheld ——— It depends on what you mean by low-cost. If you mean $0.01 each, then the answer is no. It also depends on what you mean by a tag. A raw RFID inlay is cheaper than an inlay that has...
Is there a radio frequency identification system available that would allow such vehicles to be tracked while traveling in special lanes throughout a city? —Name withheld ——— To my knowledge, there is no system currently on the market that was designed specifically...
Is any particular frequency employed more frequently than others? —Name withheld ——— There are a variety of frequencies used with radio frequency identification systems. • Passive low-frequency (LF) systems employ 125 kHz and 134 kHz. LF systems are used for animal...
Are inexpensive ID tags and readers available that can be used for this purpose? —Name withheld ——— I am unaware of any product on the market designed for this specific application, but most RFID readers have input and output ports, so it might be possible rig up a...
What types of tags are used to track railcars and alert passengers how long it will be before a train arrives? —Karuna ——— Dear Karuna, Systems that determine the locations of trains can utilize either or active (battery-powered) or passive tags. Hamburger Hochbahn,...
I've heard that Impinj developed such a tag, but I can not find any information about it. —Robert ——— Impinj developed a near-field communication (NFC) tag that it says can be read through water. Like a high-frequency (HF) tag—which features a coil so the tag forms an...
Can you please provide actual figures regarding the ROI attained by any companies using the technology—particularly in the construction industry? —Name withheld ——— It is difficult to provide specific information about return on investment (ROI), because every...
Our goal is to ensure that we can read every tag 100 percent of the time on both incoming and outgoing trolleys moving through a dock door. Which approach would you recommend: installing additional fixed readers or putting more tags on the trolleys? —Name withheld ———...
What are the advantages and disadvantages for each type of technology? —Name withheld ——— Schools have used both ultrahigh-frequency (UHF) and active tags operating in the microwave range. One of the first proposed deployments in a school was at Brittan Elementary...
Who were the technology and systems integration vendors for the nation's RFID-enabled Electronic Road Pricing (ERP) system? —Name withheld ——— Singapore's Electronic Road Pricing (ERP) scheme, a toll-collection system adopted to reduce traffic congestion by charging...
Are there any health issues involved? And does RFID have green certification? —Name withheld ——— That's actually three questions, so I'll take them one at a time. We don't make recommendations regarding any particular applications, because companies must weigh the...
Which companies offer the best end-to-end solutions? —Name withheld ——— I don't know, to be honest, because RFID Journal has never conducted a thorough evaluation of systems available on the market, nor have I ever seen one performed by anyone else. I believe that...