Patent ID: 9412061
Filing Date: 2016-08-09
CPC Classification: G06K,H04Q

Claim Text:
1. An RFID device, comprising: an antenna attached to an antenna substrate having a first and second side with the first side attached to the antenna substrate; an interposer and an interposer substrate with the interposer attached to the interposer substrate; an integrated circuit coupled to the interposer; a sensing material having at least one layer with electrical properties, the sensing material disposed between the interposer and the antenna is attached on the second side to the sensing material wherein the interposer is coupled to the antenna through the sensing material primarily via magnetic coupling and at least one aperture disposed through the interposer substrate and the interposer to the sensing material; and wherein the electrical characteristics of the sensing material changes in response to exposure to an environmental condition, and the magnetic coupling between the interposer and the antenna changes and wherein a portion of one of the interposer and the antenna is coated with an activator chemical and a portion of a remaining one of the interposer and the antenna is coated with a passive material such that the sensing material is activated in response to the activator chemical contacting the passive material.