Radio-frequency identification (RFID) tag assembly

A method of power storage in a tag assembly, the method comprising:

• receiving, at a first tag of the tag assembly, a first radio-frequency (RF) signal including a data request;
• powering a first circuit of the first tag from the first RF signal to respond to the data request;
• in response to detecting a power storage condition, converting energy from the first RF signal to storable energy without storing the storable energy in the first tag;
• and
• storing the storable energy at a battery of a second tag of the tag assembly.

A method of power sharing in a tag assembly, the tag assembly including a first tag and a second tag, the method comprising:

• detecting, at the second tag of the tag assembly, a power sharing condition;
• providing stored energy from a battery of the second tag to the first tag of the tag assembly;
• providing a first circuit of the first tag with supplemental power from the stored energy;
• and
• completing the passive tag operation at the first tag,
• wherein the first tag is configured for a passive tag operation and the second tag configured for an active tag operation.

A radio-frequency identification (RFID) reader comprising:

• a communications interface;
• and
• a processor interconnected with the communications interface, the processor configured to:
• in response to an interrogation condition, initiate a data request to a first RFID tag in a tag assembly;
• control the communications interface to emit a first radio-frequency (RF) signal with the data request and a power storage request to convert, at the first RFID tag, power from the first RF signal to storable energy without storing the storable energy in the first tag, the storable energy being stored at a battery of a second RFID tag in the tag assembly;
• obtain a response to the data request;
• and
• in response to detecting a stop condition, terminate the first RF signal.