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Read-on-metal
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“read-on-metal (ROM) can be defined as RFID transponders that is able to be attached to metal objects. Metal objects detune typical RFID tags so the radio signal from the tag will be outside the targeted bandwidth that the RFID tag reader is tuned for. The read-on-metal RFID tags are designed to compensate for the metal effect. There are several tag design methods to create the read-on-metal tags. The original method was to provide a spacer to shield the tag antenna from the metal creating bigger tags. New techniques focus on specialized antenna design that utilize the metal interference and signal reflection for longer read range than similar sized tags attached to non-metal objects. ”. Read-On-Metal transponders will continue to create new opportunities for users in a wide range of asset tracking and broader industrial applications. The main applications are asset tracking on servers and laptops in IT data centers, industrial manufacturing quality control and manufacturing, oil and gas pipeline maintenance, and gas cylinders. The technology is evolving to allow transponders to be embedded-in-metal. The capability allows manufacturers to track small metal items from cradle to grave. The main focus for RFID inside metal is tool tracking, weapon tracking, and medical device quality control. See Also
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