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SIOP allows users to directly authenticate peer-to-peer with the website without having to communicate with a centralized component. Afterward, the SSI wallet makes it possible to exchange Verifiable Credentials and provide any additional information that would normally be requested from the identity provider. While this solution is superior in terms of privacy, it also requires integration efforts by the website, probably hindering immediate mass adoption of the technology as of now. To provide solutions in the mid and the long term, the IOTA Foundation is therefore interested in both Web2 and Web3 solutions simultaneously. [3]
On 22 July 2022, ultimately Ultimately IOTA chose a proposal by walt.id that covers both Web2 and Web3 solutions. [4]
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