Kaynak doğrulamalı araştırma: Coinbase

Verified source facts

1. Coinbase lists passkeys and physical security keys among stronger two-step verification options and recommends keeping multiple methods. 2. Coinbase explains that passkeys may be stored on a device, in a platform keychain or through another supported credential provider. 3. Coinbase's troubleshooting flow treats access recovery as account-specific and may require identity or device checks inside the official workflow. 4. Coinbase availability and product access vary by country, legal entity and account state, so a public help page is not proof of eligibility.

Comparison at a glance

1. Safe onboarding step: Official origin

Account-security onboarding should begin from the official domain or app and stay inside the authenticated security interface. The official origin step concerns the registrable domain and signed app. Confirm the current control in the user's own account, then open a saved official bookmark. Never copy a password, one-time code, biometric, recovery phrase, private key, API secret, or identity document into notes or chat.

Design for loss before changing the primary method. A passkey may depend on one device, a platform keychain, a password manager, a hardware key, or a synchronized credential provider. The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device compromise of the local device. Keep the existing method until the independent backup has been tested from a trusted context.

For official origin, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Open a saved official bookmark, then sign out of a non-critical session and prove the alternate path. If compromise of the local device remains unresolved, stop before deleting any working authenticator.

2. Safe onboarding step: Regional availability

The regional availability step concerns country, entity and account eligibility. Confirm the current control in the user's own account, then read the current signed-in availability notice.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device approval of a new account.

For regional availability, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Read the current signed-in availability notice, then sign out of a non-critical session and prove the alternate path. If approval of a new account remains unresolved, stop before deleting any working authenticator.

3. Safe onboarding step: Primary device

The primary device step concerns where the first passkey is created. Confirm the current control in the user's own account, then use a patched and screen-locked device.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device future device failure.

For primary device, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Use a patched and screen-locked device, then sign out of a non-critical session and prove the alternate path. If future device failure remains unresolved, stop before deleting any working authenticator.

4. Safe onboarding step: Credential storage

The credential storage step concerns device-only, keychain or password-manager custody. Confirm the current control in the user's own account, then record where the credential actually lives.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device provider recovery behavior.

For credential storage, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Record where the credential actually lives, then sign out of a non-critical session and prove the alternate path. If provider recovery behavior remains unresolved, stop before deleting any working authenticator.

5. Safe onboarding step: Second passkey

The second passkey step concerns independence from the primary device. Confirm the current control in the user's own account, then add it under different custody.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device synchronization coupling.

For second passkey, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Add it under different custody, then sign out of a non-critical session and prove the alternate path. If synchronization coupling remains unresolved, stop before deleting any working authenticator.

6. Safe onboarding step: Hardware key

The hardware key step concerns physical FIDO-style backup. Confirm the current control in the user's own account, then register and label a spare key.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device loss or hardware damage.

For hardware key, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Register and label a spare key, then sign out of a non-critical session and prove the alternate path. If loss or hardware damage remains unresolved, stop before deleting any working authenticator.

7. Safe onboarding step: Existing method

The existing method step concerns safe transition from the old 2FA method. Confirm the current control in the user's own account, then keep it until the new path is tested.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device future deprecation timing.

For existing method, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Keep it until the new path is tested, then sign out of a non-critical session and prove the alternate path. If future deprecation timing remains unresolved, stop before deleting any working authenticator.

8. Safe onboarding step: Recovery route

The recovery route step concerns official access-restoration procedure. Confirm the current control in the user's own account, then bookmark the official help path before loss.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device identity-review outcome and timing.

For recovery route, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Bookmark the official help path before loss, then sign out of a non-critical session and prove the alternate path. If identity-review outcome and timing remains unresolved, stop before deleting any working authenticator.

9. Safe onboarding step: Backup test

The backup test step concerns sign-in without the primary device. Confirm the current control in the user's own account, then perform a controlled test before removal.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device behavior during a service incident.

For backup test, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Perform a controlled test before removal, then sign out of a non-critical session and prove the alternate path. If behavior during a service incident remains unresolved, stop before deleting any working authenticator.

10. Safe onboarding step: Secret boundary

The secret boundary step concerns passwords, codes, biometrics and identity records. Confirm the current control in the user's own account, then enter them only in official device or Coinbase prompts.

The venue's public documentation can describe supported paths, but it cannot prove the state of this account or device endpoint malware or phishing risk.

For secret boundary, record only non-secret evidence: method label, custody owner, setup date, tested device and recovery owner. Enter them only in official device or Coinbase prompts, then sign out of a non-critical session and prove the alternate path. If endpoint malware or phishing risk remains unresolved, stop before deleting any working authenticator.

Decision scenarios

Scenario 1: when official origin becomes decisive

Consider a reader whose main constraint is the registrable domain and signed app. The correct response is not to infer a universal platform or product winner. It is to open a saved official bookmark, retain the evidence, and define a stop condition before funds or permissions are committed. If the evidence changes, the decision must be reopened. This produces a repeatable operating rule rather than a one-time opinion.

Scenario 2: when regional availability becomes decisive

Consider a reader whose main constraint is country, entity and account eligibility. It is to read the current signed-in availability notice, retain the evidence, and define a stop condition before funds or permissions are committed.

Scenario 3: when primary device becomes decisive

Consider a reader whose main constraint is where the first passkey is created. It is to use a patched and screen-locked device, retain the evidence, and define a stop condition before funds or permissions are committed.

Scenario 4: when credential storage becomes decisive

Consider a reader whose main constraint is device-only, keychain or password-manager custody. It is to record where the credential actually lives, retain the evidence, and define a stop condition before funds or permissions are committed.

Scenario 5: when second passkey becomes decisive

Consider a reader whose main constraint is independence from the primary device. It is to add it under different custody, retain the evidence, and define a stop condition before funds or permissions are committed.

Scenario 6: when hardware key becomes decisive

Consider a reader whose main constraint is physical FIDO-style backup. It is to register and label a spare key, retain the evidence, and define a stop condition before funds or permissions are committed.