> assume that passport chips are similar enough so that they would provide a similar signing rate per second. Making it probably the most egalitarian POW mechan

> assume that passport chips are similar enough so that they would provide a similar signing rate per second. Making it probably the most egalitarian POW mechanism that could exist. If you're going to base a system on this, you'd need to be prepared for the possibility of the government passport-issuing service switching to a different chip (different vendor, next gen design, etc.). It might be equal now, but what happens if everyone who renews their passport suddenly starts getting different hardware? People could even realize what's going on and there might be a mad rush to renew passports. Basically, when you piggyback on someone else's system, you add a variable you don't control.