Yup, Worldcoin has been the one of the efforts in this space. We're trying to have a frictionless, less privacy-invasive method than biometric scanning

Do you work for Worldcoin?

That is the silicon valley cryptoscam version.

This concept has been studied already extensively, e.g [1] (in 2000!) by people like Rivest and Chaum, who have actual decade-old competence in that field.

[1] https://people.csail.mit.edu/rivest/pubs/pubs/LRSW99.pdf

Or just charge bots and humans and we're good to go

https://www.nytimes.com/2006/02/05/technology/postage-is-due...

While that works for attacks that are like spam, bot detection for high margin attacks like show ticket scalping really wants an identity-oriented solution.

Ah yes, postage has stopped all the spam coming to my house!

This is an extremely ignorant take. It's extremely well-known that one of the primary ways you stop spam is by making it economically infeasible, specifically by making the cost of distribution higher than the expected return. It's also extremely well-known that spam snail-mail is subsidized by the US post office and doesn't pay normal post rates.

> Say something everyone lives everyday around the world. > "This is an extremely ignorant take."

I think worldcoin added this year (?) identification using government e-passport as well (not only orb) - all modern passport have NFC/RFID chip, you won't get all data from that in public way but can verify signature and can get basic information. There are already apps in appstore doing that.