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Expo & React Native · all subjects

accounts/security

16 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

Never share Personal account credentials

Do not share authentication credentials for a Personal account with anyone for any reason.

Security activity tracking

Security activity is a list of changes that happened to an account's profile, including changes to password, email, and 2FA authentication setup. It can be found under Overview > User settings in the Expo dashboard.

Enable two-factor authentication location

Two-factor authentication can be enabled from personal account settings on expo.dev at https://expo.dev/settings#two-factor-auth.

Two-factor authentication methods supported

Two-factor authentication for Expo accounts can be delivered through authenticator apps that support Time-based One-time Passwords (TOTP). Supported authenticator apps include Last Pass Authenticator, Authy, 1Password, Google Authenticator, and Microsoft Authenticator. SMS is deprecated for newly-added 2FA methods but continues to work for existing methods.

Authenticator app setup for 2FA

During two-factor authentication setup with an authenticator app, Expo provides a QR code to scan with the app. The authenticator app then provides a confirmation code to enter on Expo. Once you enter the code, 2FA via authenticator app activation is complete.

SMS codes validity window

Codes received via SMS for two-factor authentication are valid for at least 10 minutes. The same code may be received multiple times within this 10-minute window.

Recovery codes for two-factor authentication

When setting up two-factor authentication, Expo provides a set of recovery codes that can be used instead of a one-time password if you lose access to your authenticator app or SMS device. Each recovery code is valid for one use only. Recovery codes can be downloaded as a file labeled expo-recovery-codes.txt and should be stored in a secure and memorable place.

Two-factor authentication settings changes

Changes to two-factor settings are managed from personal account settings on expo.dev at https://expo.dev/settings. Available changes include: add or remove authentication methods, set a default method, regenerate recovery codes, and disable two-factor authentication. A one-time password is required to make any changes to 2FA settings.

Regenerate recovery codes invalidates existing codes

Regenerating recovery codes from personal account settings will invalidate any existing recovery codes.

Multiple 2FA methods as backup

Setting up multiple authentication methods associated with different physical devices ensures account access is retained if a device is reset or lost.

Account recovery when all 2FA methods unavailable

If you cannot access your account through any supplied two-factor authentication methods, you may email Expo support from the email associated with your account at https://expo.dev/contact. Expo cannot guarantee restoration of access to your account in this scenario.

SMS deprecation warning for 2FA

SMS is no longer supported for newly-added two-factor authentication methods. Existing SMS two-factor authentication methods will continue to work, but Expo recommends switching to an authenticator app as it provides better security.

Expo data collection philosophy

Expo collects only a minimal amount of data necessary to make informed decisions about products and services. The team's focus is not on gathering huge amounts of data, but on providing developers with tools that enable them to create robust and high-quality apps and excellent user experiences.

Expo transparency requirements for developers

As a developer using Expo tools, you need to be aware of how Expo treats your end users' data to ensure that you comply with relevant laws, frameworks, or guidelines in your industry. Expo is transparent about the data it collects, how it collects it, and why.

Expo privacy documentation resources

Expo provides a privacy policy at https://expo.dev/privacy and a privacy explained page at https://expo.dev/privacy-explained. The privacy explained page details exactly what data Expo collects from developers and end users, and why it collects the data.

Expo regulatory compliance standards

Expo is GDPR-compliant, CCPA-compliant, and Data Privacy Framework-compliant across all scenarios regarding user data.

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