according to the research Magnetic Backscatter for In

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body Communication and

Localization

Bill Tao, Emerson Sie, Jayanth Shenoy, Deepak Vasisht

University of Illinois Urbana

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Champaign answer the following questions

Briefly identify the key contributions of the paper $($Use no more than three sentences to answer each question$)$

$$What research problem does it try to solve?

$$Why is it an important problem?

$$What$\text{'}$s the proposed approach?