The possibility of attaining current position of the message sender withoutperson's consent seriously compromises the secrecy of correspondence. Classicalcommunication systems cannot guarantee the security of communication againstunwanted location tracking, because the sender must broadcast a signal at themoment of sending the message. The source of the signal could be alwayslocated, at least in principle. We show that quantum communication enablessending the message with pre-distributed entangled quantum systems, local weakmeasurements, time synchronization between the sender and the receiver andclassical communication by the message receiver alone, therefore, physicallysecuring the sender's location.
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