- Tag is too far from the reader
- Tag is placed on a surface it was not intended for
- Reader signal is blocked by an object between the reader and the tag
- Reader signal is being reflected off an object or flat surface
- For fixed readers, the cable connecting the reader and antenna is loose
- Reader transmit power is not set to the maximum level
- Reader antenna is not aimed at the tag
- Reader is not set for the correct region, e.g., ETSI instead of FCC
- Dynamic range of the sensor is exceeded, especially in the case of moisture sensors
- With software that supports registering sensors, trying to read unregistered tags can give the appearance of a read failure
- All antennas have a pattern of blind spots, called nulls, and so pointing the reader into a null can lead to read failure or greatly reduced read range.
Was this article helpful?
That’s Great!
Thank you for your feedback
Sorry! We couldn't be helpful
Thank you for your feedback
Feedback sent
We appreciate your effort and will try to fix the article