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Comment by WFHRenaissance | Hacker News Reader

I’m aware of a use case where person/asset location is being determined using a distributively owned set of radio transmitters so that proof-of-location can be established without use of GPS.

Plenty of supply chain use cases already exist using private chains/ledgers — this will skew more toward public chains or hybrid solutions as demands for transparency amp up.

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> I’m aware of a use case where person/asset location is being determined using a distributively owned set of radio transmitters so that proof-of-location can be established without use of GPS.

...why?

GPS is spoofable… you’re a security guy, you should know this :p

Yes, I am. I'm not aware of a threat model in which you can't trust the frequencies GPS is on but you can trust the frequencies that the FCC allows personal radio transmissions to be on. Seems like a lot of added complexity (and, notably, no legal recourse) for essentially the same failure mode.

https://www.wired.com/story/spoof-jam-destroy-why-we-need-a-...

Yes, GPS is not particularly secure. But I don't think that addresses the threat model above.

(In general, jamming is always a possibility with anything wireless. That is just not going to change. What might change is spoof resistance, which can be accomplished with schemes that are a lot simpler than anything DeFi can conjure. There's a decent amount of work on related schemes in the vehicle-to-vehicle communication space.)

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