The rfid range limit changes for each technology.
Rfid frequency range.
If you re planning to use rfid you need to know what distance it will work over.
High frequency tags work fairly well on objects made of metal and can work around goods with medium to high water content.
There are three main frequencies within which passive rfid tags operate.
Rfid radio frequency identification is a form of wireless communication that incorporates the use of electromagnetic or electrostatic coupling in the radio frequency portion of the electromagnetic spectrum to uniquely identify an object animal or person.
Typical hf rfid applications include tracking library books patient flow tracking and transit tickets.
Rfid range is fundamental.
Radio frequency identification rfid uses electromagnetic fields to automatically identify and track tags attached to objects.
A radio receiver and transmitter.
The frequency range along with other factors strongly determines the read range attachment materials and application options.
Our active rfid range is 1km but passive rfid range is generally under 12m.
Rfid distance range depends on interferance and wave length.
An rfid tag consists of a tiny radio transponder.
When triggered by an electromagnetic interrogation pulse from a nearby rfid reader device the tag transmits digital data usually an identifying inventory number back to the reader.
Each rfid frequency range is different.