I'm not saying it's not doable, I'm just saying it's more complicated (and probably much more expensive) than the alternative. It also makes individual turnstil

I'm not saying it's not doable, I'm just saying it's more complicated (and probably much more expensive) than the alternative. It also makes individual turnstile failures more difficult to handle. Suppose the network died on one of the turnstiles. Then you'd have to have build a caching system that it resorts to in case of network failures to prevent giving people free rides, and a way to merge state with the rest of the network once it rejoined. Of course you can do it, but I hope you're starting to see how complexity could grow faster than one might expect. I imagine that there are better ways to solve the problem at hand (security) that don't involve adding thousands of lines of code, miles of fiber, and hundreds of thousands of dollars.