How to get Step Up MFA working on react native?

[dominictobias-bullish]

Hi this code:

await authorize({
  redirectUrl,
  audience: process.env.EXPO_PUBLIC_AUTH0_AUDIENCE || '',
  scope: 'profile email trading:enroll-mfa trading:mfa',
  additionalParameters: {
    custom_exchange_mfa_authentication_id: authenticationId,
  },
})

Doesn't work. But works well on desktop with:

const mfaAccessToken = await getAccessTokenWithPopup({
  authorizationParams: {
    scope: 'profile email trading:enroll-mfa trading:mfa',
    audience: window.location.origin,
    custom_exchange_mfa_authentication_id: data.authenticationId,
  },
})

Using api.multifactor.enable('any', { allowRememberBrowser: false }); in an Action.

I managed to get an MFA-like box to come up on mobile, but it's the wrong one. It prompts for some mysterious OTP that hasn't been set before (and no email is received):

On desktop it works:

There is 0 documentation or examples on what sendMultifactorChallenge is for but that does nothing (doesn't even open a webview popup and return undefined)

So how can we do MFA on mobile? Thanks

[dominictobias-bullish]

Seems like mobile doesn't support Passkey authentication. Which is pretty astonishing.

[subhankarmaiti]

@dominictobias-bullish for MFA you can refer to the this example.