I am working on a time-and-attendance tracking solution in which users would have an RFID card or inlay. Thus, we need an inexpensive RFID tag. Are low-frequency (LF) cards or adhesive inlays generally less expensive than high-frequency (HF) models?
No, passive LF RFID transponders are generally around the same price as passive HF transponders. Both require a looped copper antenna. Passive ultrahigh-frequency (UHF) cards are generally a little cheaper, because the antenna can be printed and the manufacturing process is a little simpler since UHF doesn’t use antenna loops. However, passive UHF might not be appropriate for some applications due to its longer read range.
I would caution against going with the cheapest solution available. While you can purchase passive HF transponders on paper stock, these likely wouldn’t last very long in an employee’s wallet. A plastic card would better protect an RFID inlay from damage.
—Mark Roberti, Founder and Editor, RFID Journal
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