Low Frequency (LF) RFID Technology

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Posted Aug 24, 2011, 1:15:13 PM by DecisionPoint Team & filed under

parking-lot-RFID-tag1-300x199As mentioned in our Aug. 22nd post about selecting the appropriate RFID frequency for your application, today I’m providing the first in a three part series that takes a closer look at a few of the different RFID frequencies. Today we’re taking a closer look at Low Frequency (LF) Passive RFID. 125-134 KHZ LF RFID (passive) has the following characteristics:

  • Read range: from approximately 1 inch to 1.5 ft.
  • Reads one tag at a time
  • Limited memory: 96 to 2,000 bits
  • Penetrates most materials well, including water and metal
  • Easily embedded in non-metallic items
  • May be affected by electrical noise in an industrial environment

Typical LF RFID applications:

  • Access control-such as contactless tags that are read to enter/exit parking lots or buildings
  • Customer IDs via key fobs
  • Animal tracking
  • Legacy asset tracking

Check back tomorrow for part 2 when I take a closer look at High Frequency (HF) RFID.

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