A method of communicating information from an ambient electromagnetic power harvesting (AEPH) chip. The method comprises receiving energy from a first ambient electromagnetic field by an AEPH chip, wherein the first ambient electromagnetic field provides a first level of power; based on energy received from the first ambient electromagnetic field, performing a first tier of processing by a processor of the AEPH chip; receiving energy from a second ambient electromagnetic field by the AEPH chip, wherein the second ambient electromagnetic field provides a second level of power that is greater than the first level of power; determining by the processor that the second level of power is above a predefined threshold; and based on the second ambient electromagnetic field being above the predefined threshold, performing a second tier of processing by the processor, wherein the second tier of processing comprises writing information by the processor into a non-transitory memory.