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Information RFID tagging facilities

  • US 9,858,452 B2
  • Filed: 11/14/2016
  • Issued: 01/02/2018
  • Est. Priority Date: 12/09/2005
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a first radio frequency (RF) tag and a second RF tag, wherein the first RF tag and the second RF tag are adapted to at least in part operate using energy received from an RF signal, wherein the first RF tag and the second RF tag transfer data between each other when (i) the first RF tag receives energy from a first RF signal from an RF device and (ii) the second RF tag is out of range of the first RF signal from the RF device.

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