| CPC H04B 11/00 (2013.01) [G06Q 10/0833 (2013.01)] | 20 Claims |

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1. A system, comprising:
a tracking device instrumentation unit (TD-IU), comprising:
a TD-IU processor configured to generate an electrical analog signal (EAS) and transmit the EAS to a first converter the TD-IU;
the first converter configured to convert the EAS into mechanical vibration energy (MVE) and transmit the MVE towards a tracking device communications unit (TD-CU) through a wall of a container;
the TD-CU, comprising:
a second converter configured to:
receive the MVE, wherein the MVE is received via a link between the second converter and the first converter, wherein the MVE comprises a form of data generated in the TD-IU;
convert the MVE into a second EAS, wherein the second EAS is transmitted to a modem of the TD-CU, wherein the modem sends the second EAS to a TD-CU processor; and
the TD-CU processor comprises circuitry and is configured to process the second EAS to extract the data based on a start of a data frame and an end of the data frame.
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