zlacker

It won't stop bots. Have you seen phone farms [1]? Attackers are getting clever (and lazy maybe). They use physical devices. Old ones are cheap, can have broken screens etc. And you can't lock out users with old devices.

We shouldn't fight bots. We should use trust instead. Not global trust, it must be subjective. I trust A, B, C. B trusts D, E. E trusts F. It should be weighted. There's small world effect [2]. There's just a few hops between any two people in the world. It solves SPAM, it solves reviews, scam, news and maybe politics. Somebody please get it done already.

1. https://duckduckgo.com/?q=phone+farm+bots&t=ffab&iar=images&...

2. https://en.wikipedia.org/wiki/Small-world_experiment

>>comboy+(OP)
This is known as https://en.wikipedia.org/wiki/Web_of_trust

>>alexmi+p6
I'm sorry for not inventing a different name but what I have in mind is very different. Main difference is that it queries recursively automatically, and it is weighted. Weights are very important. This is old version where I had put my ideas [1]. I have no chance touching it anytime soon - it requires focus and solving hard problems (some of which sound lame like usability and bootstrapping). I write these comments hoping that maybe somebody decides to try it. Chances of bootstrapping it are slim (but could start in some niches), but the payout (I mean positive change in society, there's no money to be made here) is huge enough that I think it's worth trying.

Since I wrote it I became confident that algorithm which is used for cumulative trust computation should be up to each node (instead of using zk-SNARks for example). If you trust somebody, you trust them to compute it as they wish. And I would drop dimensionality at least in the beginning. Probably using multiple identities in place of it.

1. http://comboy.pl/wot.html