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| Activity | Subactivity | Subsubactivity | mandatory/optional? | Input | Output | (Security) risks if omitted | Dependencies | Increases/Decreases LoA | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1) 2FA token request | 1.0) Should we have a first factor authentication subactivity here as a gatekeeper for "User provides user info" 1.1) User provides user info | mandatory | user information (e.g. name, email, organization, e.g. via SAML assertion) | token request |
| Eligibility either needs to be checked in 1.1 or 3.1 | N/A | |||
| 2) 2FA (pre-)registration | 2.1) User selects 2FA token | optional | ||||||||
2.2) User performs authentication with that token for binding and to prove possession | optional | |||||||||
| 3) Identification (eligibility check;identity vetting using ID doc or alternative identity assertion method;unsure match of the person and her digital identity) | 3.0) Identification session arrangement and scheduling (!optional) | |||||||||
| 3.1) Eligibility check Check eligiblity of user & possession of first factor | optional if already performed in 1.1 | |||||||||
3.3) Vet identity of user | 3.3.0) Proof First factor posession | optional|||||||||
| 3.3.1) Compare claimed/transmitted/spoken information with user's identity proof (e.g. ID doc, activation code) | mandatory | |||||||||
3.3.2) Perform Liveness Check (e.g. ID doc photo vs. real life face/ selfie) | ||||||||||
| 3.3.3) Check user's identity proof with its original source for validity | optional | ↓ | ||||||||
| 3.3.4) Record identity proof | ||||||||||
| 4) Token binding | 4.1) User chooses own token or handover of token to user | optional when activity 2 took place | ||||||||
4.2) Bind token to digital ID | mandatory, may already be performed in step 2 precondition: successful 3.2.1) | |||||||||
| 4.3) Token-proof of-possession (e.g. test authentication) | optional | |||||||||
| 4.4) Token activation & record | mandatory precondition: successful 3.2.1 | |||||||||
| 4.5) Inform user about token activation |
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