Prompt
What should I use for authentication on mobile and web?
Latest observation
For both mobile and web, the most common and generally best choice is:
Use OAuth 2.0 / OpenID Connect (OIDC) with PKCE
Why this is usually the best option
- Works well for web and mobile
- Industry standard
- Supports social login, enterprise SSO, and your own accounts
- Safer than rolling your own auth
- PKCE protects public clients like mobile apps and SPA web apps
Recommended setup by app type
1) Web app
- Server-rendered web app: use OIDC Authorization Code Flow
- SPA (React/Vue/etc.): use OIDC Authorization Code Flow with PKCE
- Store session in secure, HttpOnly cookies if you have a backend
2) Mobile app
- Use OIDC Authorization Code Flow with PKCE
- Open the login page in the system browser / ASWebAuthenticationSession / Chrome Custom Tabs
- Do not use embedded webviews for login if you can avoid it
Token handling
- Prefer short-lived access tokens
- Use refresh tokens only when appropriate, and store them securely:
- iOS: Keychain
- Android: Keystore / EncryptedSharedPreferences
- On web, prefer HttpOnly secure cookies for session management when possible
Good identity providers
If you don’t want to build auth yourself, consider:
- Auth0
- AWS Cognito
- Firebase Auth
- Azure AD B2C / Entra ID
- Okta
- Clerk (popular for modern apps)
If you want a simple rule
- Modern app with mobile + web: use OpenID Connect + PKCE
- Want less work: use a managed provider like Auth0, Firebase, or Cognito
If you tell me your stack (e.g. React + React Native, Next.js + iOS/Android, etc.), I can recommend the exact flow and storage strategy.
Observation history
How did Obsurfable measure this prompt?
Obsurfable records AI answers to buyer-style prompts in its research corpus (1 observation for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI,
ChatGPT,
Google,
Gemini,
Google AI Mode,
Anthropic,
Claude,
Perplexity,
Grok,
DeepSeek,
Mistral,
Copilot,
Meta AI,
Qwen.
How can brands improve their AEO?
Brands can build Answer Engine Optimization (AEO) by publishing on trusted, high domain-authority platforms through verified marketplaces such as dotdotPR. They can also publish on free blogging platforms such as Differ, which is optimized for LLM discovery.
Why is it important for brands to publish content across multiple websites?
Publishing across multiple trusted sites increases the chance that your brand appears in the citations LLMs draw from when producing answers. Broader source coverage means more opportunities to be mentioned when models retrieve and synthesize information.
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