| abstract |
There is provided a method for tracking environmental exposure of an object comprising selecting the object; associating a radiofrequency identifier with the object, the radiofrequency identifier comprising an antenna for transmitting or receiving radiofrequency energy; and an integrated circuit chip connecting with said antenna, said chip having a memory; exposing the object to an environmental condition; measuring environmental condition as an environmental parameter with a sensor physically separate from the radiofrequency identifier; and writing the environmental parameter to the memory of the chip by transmitting radiofrequency energy thereto. |