# Camera Technical Implementation — Details and Best Practices

> **Agent role**: Reference this file for
  detailed technical implementation when working with camera features.

## Platform-Specific Considerations

### iOS

- Requires `NSCameraUsageDescription` in Info.plist

- Supports both front and back cameras

- Implements proper permission handling

### Android

- Requires camera permissions in manifest

- Supports both front and back cameras

- Handles permission requests through Capacitor

### Web

- Requires HTTPS for camera access

- Implements fallback mechanisms

- Handles browser compatibility issues

## Error Handling

### Common Error Scenarios

1. No camera found

2. Permission denied

3. Camera in use by another application

4. HTTPS required

5. Browser compatibility issues

### Error Response

- User-friendly error messages

- Troubleshooting tips

- Clear instructions for resolution

- Platform-specific guidance

## Security Considerations

### Permission Management

- Explicit permission requests

- Permission state tracking

- Graceful handling of denied permissions

### Data Handling

- Secure image processing

- Proper cleanup of camera resources

- No persistent storage of camera data

## Best Practices

### Camera Access

1. Always check for camera availability

2. Request permissions explicitly

3. Handle all error conditions

4. Provide clear user feedback

5. Implement proper cleanup

### Performance

1. Optimize camera resolution

2. Implement proper resource cleanup

3. Handle camera switching efficiently

4. Manage memory usage

### User Experience

1. Clear status indicators

2. Intuitive camera controls

3. Helpful error messages

4. Smooth camera switching

5. Responsive UI feedback

## Future Improvements

### Planned Enhancements

1. Implement Electron camera support

2. Add advanced camera features

3. Improve error handling

4. Enhance user feedback

5. Optimize performance

### Known Issues

1. Electron camera implementation pending

2. Some browser compatibility limitations

3. Platform-specific quirks to address

## Dependencies

### Key Packages

- `@capacitor-mlkit/barcode-scanning`

- `qrcode-stream`

- `vue-picture-cropper`

- Platform-specific camera APIs

## Testing

### Test Scenarios

1. Permission handling

2. Camera switching

3. Error conditions

4. Platform compatibility

5. Performance metrics

### Test Environment

- Multiple browsers

- iOS and Android devices

- Desktop platforms

---

**See also**:

- `.cursor/rules/features/camera-implementation.mdc` for

  core implementation overview

- `.cursor/rules/features/camera_platforms.mdc` for platform-specific details

**Status**: Active technical implementation guide
**Priority**: Medium
**Estimated Effort**: Ongoing reference
**Dependencies**: camera-implementation.mdc
**Stakeholders**: Development team, Camera feature team

## Model Implementation Checklist

### Before Camera Implementation

- [ ] **Platform Analysis**: Identify target platforms and camera capabilities
- [ ] **Permission Planning**: Plan permission handling for camera access
- [ ] **Dependency Review**: Review required camera packages and APIs
- [ ] **Testing Strategy**: Plan testing across multiple platforms

### During Camera Implementation

- [ ] **Platform Services**: Implement platform-specific camera services
- [ ] **Permission Handling**: Implement proper camera permission handling
- [ ] **Error Handling**: Implement graceful error handling for camera failures
- [ ] **Performance Optimization**: Optimize camera performance and responsiveness

### After Camera Implementation

- [ ] **Cross-Platform Testing**: Test camera functionality across all platforms
- [ ] **Permission Testing**: Test permission handling and user feedback
- [ ] **Performance Validation**: Verify camera performance meets requirements
- [ ] **Documentation Update**: Update camera technical documentation