Prompt
Do I need PKCE for mobile OAuth?
Latest observation
Usually yes — for mobile OAuth, you should use PKCE.
Why
Mobile apps are generally considered public clients because they can’t safely store a client secret. PKCE helps protect the authorization code flow against code interception and replay attacks.
When PKCE is recommended/expected
- Native mobile apps (iOS, Android)
- SPA/mobile web views
- Any client that cannot securely keep a client secret
When it may not be needed
- If you’re using a backend server that handles the OAuth flow and keeps the client secret securely, PKCE may be optional depending on the provider.
- Some providers now require PKCE even for confidential clients.
Best practice
For mobile apps, use:
- Authorization Code Flow + PKCE
- Avoid the implicit flow
- Prefer the system browser / ASWebAuthenticationSession / Custom Tabs rather than embedded webviews
If you want, I can also give you the exact OAuth flow for iOS or Android.
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 Circuit. 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.
Want this interpreted for your brand?
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