spec 2 linked patterns checked
MDN: MediaDevices getUserMedia()
Documents requesting camera or microphone media streams, user permission prompts, constraints, returned MediaStream tracks, and error cases for denied or unavailable media.
Read with a purpose
What this source can teach
Use this source to check a technical or accessibility requirement against its exact wording and scope.
- Start with the original. Open the source and find the guidance or example relevant to your task.
- Trace the connection. Use the claim notes below to see how this site applies the source to specific patterns.
- Check the setting. Compare the source's platform, people, and constraints with your own decision.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Camera capture | Choose camera capture when the product must create new camera media and users need live preview, framing, capture, review, and retake behavior. | The camera stream starts only after a deliberate user action and contextual permission rationale. | Supports permission-gated media stream capture and camera access errors. |
| QR scan | Choose QR scan when decoding a code and acting on the decoded payload is the central task. | Scanning starts only after users choose a QR-dependent task and can see purpose, fallback, and privacy impact. | Supports camera access states when web QR scanning uses live video. |
Evidence Role
This source is treated as spec evidence. Its value comes from the specific claims and setting described above.
Publisher: MDN Web Docs. Last checked: .