The principle of using the speed of light as a security mechanism is exactly how the https://proximum.xyz network operates: voting power is determined by the volume of space swept by each node, and nodes estimate relative location using a trustless time of flight measurement.
I like the idea of a basic XOR as the fastest possible response: could stream the response, so latency << 1 µs seems doable. That's enough spatial resolution for a lot of trust-minimized location use cases.
The principle of using the speed of light as a security mechanism is exactly how the https://proximum.xyz network operates: voting power is determined by the volume of space swept by each node, and nodes estimate relative location using a trustless time of flight measurement.
I like the idea of a basic XOR as the fastest possible response: could stream the response, so latency << 1 µs seems doable. That's enough spatial resolution for a lot of trust-minimized location use cases.