Back in January, X, formerly twitter, announced adding support for login with passkeys, but only for iOS devices. Passwordless passkeys, also known as passwordless authentication or passwordless login, are authentication methods that allow users to access their accounts without the need for traditional passwords. 

In the X/Twitter beta version 10.32.0-beta, there are various references to the passkeys feature. I was able to activate the feature. The feature currently doesn't work, so we have to wait for stable version. Anyway here are some strings from the app -

Here is a screenshot of the passkey settings from the X/Twitter beta app - 

This feature could be enabled for everyone in the upcoming stable version of X/Twitter.  Currently this feature is clearly work in progress. Once rolled out the passkeys settings will be available in Settings and privacy > Security and account access > Security, under the additional password protection option.

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