Unblockable Communication With Gravity

TL;DR

This paper demonstrates a novel wireless communication method using gravity, which can transmit information through obstacles where electromagnetic signals are blocked, validated by experimental transmission through a brick wall.

Contribution

It introduces a new gravity-based communication protocol and provides experimental validation of transmitting data through barriers, showcasing gravity as an unblockable communication channel.

Findings

Successfully transmitted a gravitational message through a brick wall

Achieved a data rate of 1 bit per minute

Proved gravity can serve as a viable unblockable communication medium

Abstract

All modern wireless communication technologies are based on electromagnetism. However, electromagnetic signals are susceptible to screening and blocking, so their availability cannot be guaranteed in adverse environments. This raises a fundamental question: Can information be transmitted through a truly unblockable channel? Here we show that gravity, unlike electromagnetism, offers such a path. We propose and implement a wireless communication protocol in which a broadcaster encodes a binary message by moving a mass, while a receiver detects the resulting gravitational signal with a gravimeter. We validate this scheme experimentally, successfully transmitting a gravitational message a distance of $\approx$ 0.7 m through a brick wall at a rate of 1 bit min$^{-1}$. These results establish gravity as a viable platform for unblockable communication.