Why use RFID?

What about HF and UHF RFID?

Why use low frequency RFID?

How does it work?

Why not use manual data recording methods (paper and clipboards)?

Handwriting and legibility errors.

Keystroke data entry errors.

Generate back-office paperwork.
Labor intensive.

What are the limitations of barcode?

Tag size. Not suitable for extremely tiny items or tag dimensions.

Scan angle. Barcodes require line-of-sight scanning, without obstructions.

Tag orientation. Barcodes require line-of-sight scanning. You cannot read them through objects, paint, mud or dirt.

Harsh environments. Barcodes can be scratched, scuffed, or corroded. Abrasion and direct impacts deface barcodes.

Bright sunlight and reflective surfaces.

Water droplets.

High frequency (HF) and ultra high frequency (UHF) tags may fail under certain conditions:
  • Rust and metal (the so-called "diode effect").
  • Water, snow, ice, dew drops.
  • May require line-of-sight.

Why use low frequency RFID?
  • Reliable operation in harsh environments. Use low frequency RFID tags in wet, dusty, dirty conditions; use in high-impact applications.
  • No line-of-sight constraints. Read low frequency tags through wood, concrete, any non-metallic solids. Hide low frequency RFID tags inside objects. Paint over them.
  • Orientation between tag and scanner in LF systems is not critical. (Signal pattern is essentially omnidirectional in LF systems).
  • Read LF tags in liquids.
  • No problem with condensation on LF tags.
How does the TROVAN technology work?

The reader excites the transponder inductively by means of a low-frequency electromagnetic field. Reliable, interference-free, contact-less transmission is assured via phase modulation and a special process for error checking and correction (PSK-phase shift keying 180 degrees each for logic one and logic zero).