"The background to the standard is that passive tags like RFIDs contain very limited information and don't have a power source. Light 'em up with radio waves and the small amount of energy produced sees the tags transmit that information - essentially their name, rank, and serial number. That makes RFIDs handy in warehouses where they're used to identify items without requiring visual inspection or line-of-sight devices like a barcode scanner."
""RFID systems and wireless power transfer in the 920 MHz band have been used to implement battery-free wireless sensor systems, but it has not been possible to continuously and simultaneously acquire time-series data such as vibration, strain, or temperature." The new standard makes it possible to stream data from sensors married to passive tags, by allocating a frequency channel to each device."
ISO/IEC 18000-65 defines parameters for air interface communications to enable streaming sensors based on ISO/IEC 18000-63. Passive RFIDs lack onboard power and normally transmit only a small identifier when energized by external radio waves. Active RFIDs can sense and send time-series data but require batteries. The standard creates a method for passive-tagged sensors to wake, broadcast basic ID, and negotiate a clear frequency channel to stream continuous sensor data. The approach supports battery-free wireless sensor systems, promotes device interoperability across manufacturers, reduces vendor lock-in, and can lower system procurement costs. Four Japanese organisations proposed the standard.
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