612 lines
19 KiB
Markdown
612 lines
19 KiB
Markdown
# Product Requirements Document (PRD)
|
|
|
|
## SelfieCam - Professional Selfie Camera App
|
|
|
|
**Version:** 1.0
|
|
**Platform:** iOS 18.0+
|
|
**Language:** Swift 6 with strict concurrency
|
|
**Framework:** SwiftUI
|
|
|
|
---
|
|
|
|
## Executive Summary
|
|
|
|
SelfieCam is a professional-grade selfie camera app featuring a customizable screen-based ring light overlay, premium camera controls, and beautiful branding. The app targets content creators, makeup artists, video call professionals, and anyone who needs flattering lighting for selfies.
|
|
|
|
---
|
|
|
|
## Target Audience
|
|
|
|
- Content creators and influencers
|
|
- Makeup artists and beauty professionals
|
|
- Video call and streaming professionals
|
|
- Casual users seeking better selfie lighting
|
|
- Portrait photographers needing on-the-go lighting
|
|
|
|
---
|
|
|
|
## Technical Requirements
|
|
|
|
### Platform & Tools
|
|
|
|
| Requirement | Specification |
|
|
|-------------|---------------|
|
|
| iOS Deployment Target | iOS 18.0+ |
|
|
| Swift Version | Swift 6 with strict concurrency checking |
|
|
| UI Framework | SwiftUI (primary) |
|
|
| Persistence | iCloud via CloudSyncManager |
|
|
| Subscriptions | RevenueCat SDK |
|
|
| Camera | MijickCamera framework |
|
|
| Design System | Bedrock (local package) |
|
|
|
|
### Architecture Principles
|
|
|
|
1. **Protocol-Oriented Programming (POP)** - All shared capabilities defined via protocols before concrete types
|
|
2. **MVVM-lite** - Views are "dumb" renderers; all logic lives in `@Observable` view models
|
|
3. **Bedrock Design System** - Centralized design tokens, no magic numbers
|
|
4. **Full Accessibility** - Dynamic Type, VoiceOver labels/hints/traits/announcements
|
|
5. **Modern Swift & SwiftUI** - Swift 6 concurrency, `@MainActor`, modern APIs
|
|
6. **Testable & Reusable Design** - Protocols enable mocking and future package extraction
|
|
|
|
---
|
|
|
|
## Feature Requirements
|
|
|
|
### FR-100: Core Camera System
|
|
|
|
#### FR-101: Camera Preview
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** Full-screen camera preview with real-time display
|
|
- **Acceptance Criteria:**
|
|
- [ ] Smooth, low-latency camera preview
|
|
- [ ] Supports both front and back camera
|
|
- [ ] Camera switching via UI button
|
|
- [ ] Prevents screen dimming during camera use
|
|
- [ ] Uses MijickCamera framework for SwiftUI-native handling
|
|
|
|
#### FR-102: Photo Capture
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** High-quality photo capture with multiple trigger methods
|
|
- **Acceptance Criteria:**
|
|
- [ ] Capture button triggers photo capture
|
|
- [ ] Volume buttons trigger capture (hardware shutter)
|
|
- [ ] Camera Control button full press triggers capture (iPhone 16+)
|
|
- [ ] Post-capture preview with share functionality
|
|
- [ ] Auto-save option to Photo Library
|
|
|
|
#### FR-103: Zoom Control
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Pinch-to-zoom gesture support
|
|
- **Acceptance Criteria:**
|
|
- [ ] Smooth pinch-to-zoom interpolation
|
|
- [ ] Zoom level persists during session
|
|
- [ ] Zoom resets on camera switch (optional behavior)
|
|
|
|
#### FR-104: Camera Control Button Support
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** iPhone 16+ Camera Control button integration
|
|
- **Acceptance Criteria:**
|
|
- [ ] Full press triggers photo capture
|
|
- [ ] Light press locks focus/exposure (if API available)
|
|
- [ ] Uses `AVCaptureEventInteraction` (iOS 17.2+)
|
|
- **Known Limitations:**
|
|
- Light press may be restricted to first-party apps
|
|
- Swipe-to-zoom is Apple-exclusive API
|
|
|
|
---
|
|
|
|
### FR-200: Ring Light System
|
|
|
|
#### FR-201: Ring Light Overlay
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** Screen-based ring light effect using colored border
|
|
- **Acceptance Criteria:**
|
|
- [ ] Configurable border thickness (10-120pt range)
|
|
- [ ] Border renders around camera preview
|
|
- [ ] Quick enable/disable toggle
|
|
- [ ] Smooth transition animations
|
|
|
|
#### FR-202: Ring Light Colors
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** Multiple color temperature presets
|
|
- **Free Colors:**
|
|
- Pure White
|
|
- Warm Cream
|
|
- **Premium Colors:**
|
|
- Ice Blue
|
|
- Soft Pink
|
|
- Warm Amber
|
|
- Cool Lavender
|
|
- **Acceptance Criteria:**
|
|
- [ ] Color picker UI with visual swatches
|
|
- [ ] Premium colors show lock indicator for free users
|
|
- [ ] Premium users can access custom color picker
|
|
|
|
#### FR-203: Ring Light Brightness
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Adjustable ring light opacity/brightness
|
|
- **Acceptance Criteria:**
|
|
- [ ] Slider control for brightness (10%-100%)
|
|
- [ ] Real-time preview of brightness changes
|
|
- [ ] Debounced saving (300ms) to prevent excessive iCloud writes
|
|
|
|
---
|
|
|
|
### FR-300: Flash System
|
|
|
|
#### FR-301: Flash Modes
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Multiple flash options for photo capture
|
|
- **Modes:**
|
|
- Off
|
|
- On
|
|
- Auto
|
|
- **Acceptance Criteria:**
|
|
- [ ] Mode selector in camera UI
|
|
- [ ] Flash fires during capture when enabled
|
|
- [ ] Auto mode uses ambient light detection
|
|
|
|
#### FR-302: Front Flash
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Screen brightness-based flash for front camera
|
|
- **Acceptance Criteria:**
|
|
- [ ] Screen brightness increases to maximum during front camera capture
|
|
- [ ] Returns to original brightness after capture
|
|
|
|
#### FR-303: Flash Sync (Premium)
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Match flash color with ring light color
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature with appropriate gating
|
|
- [ ] Screen color matches current ring light color during flash
|
|
- [ ] Toggle in settings to enable/disable
|
|
|
|
---
|
|
|
|
### FR-400: Self-Timer System
|
|
|
|
#### FR-401: Timer Options
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Countdown timer before photo capture
|
|
- **Free Options:**
|
|
- Off
|
|
- 3 seconds
|
|
- **Premium Options:**
|
|
- 5 seconds
|
|
- 10 seconds
|
|
- **Acceptance Criteria:**
|
|
- [ ] Visual countdown indicator
|
|
- [ ] Audio feedback (optional)
|
|
- [ ] Cancel option during countdown
|
|
- [ ] VoiceOver announces countdown
|
|
|
|
---
|
|
|
|
### FR-500: Display & Enhancement Features
|
|
|
|
#### FR-501: Grid Overlay
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Rule-of-thirds composition guide
|
|
- **Acceptance Criteria:**
|
|
- [ ] Toggle in settings to show/hide
|
|
- [ ] Semi-transparent grid lines
|
|
- [ ] Does not interfere with tap gestures
|
|
|
|
#### FR-502: True Mirror Mode (Premium)
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Horizontally flipped preview like a real mirror
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature with appropriate gating
|
|
- [ ] Live preview is mirrored
|
|
- [ ] Captured photo reflects mirror setting
|
|
|
|
#### FR-503: Skin Smoothing (Premium)
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Real-time subtle skin smoothing filter
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature with appropriate gating
|
|
- [ ] Toggle in settings
|
|
- [ ] Subtle, natural-looking effect
|
|
- [ ] Applied to both preview and captured photo
|
|
|
|
#### FR-504: Center Stage (Premium)
|
|
- **Priority:** P3 (Low)
|
|
- **Description:** Automatic subject tracking/centering
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature with appropriate gating
|
|
- [ ] Uses Apple's Center Stage API if available
|
|
- [ ] Graceful fallback on unsupported devices
|
|
|
|
---
|
|
|
|
### FR-600: Photo Quality Options
|
|
|
|
#### FR-601: HDR Mode (Premium)
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** High Dynamic Range photo capture
|
|
- **Modes:**
|
|
- Off
|
|
- On
|
|
- Auto
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature with appropriate gating
|
|
- [ ] HDR indicator in UI when enabled
|
|
- [ ] Uses system HDR capture capabilities
|
|
|
|
#### FR-602: Photo Quality Settings (Premium)
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Resolution/quality selection
|
|
- **Options:**
|
|
- Medium (Free)
|
|
- High (Premium)
|
|
- **Acceptance Criteria:**
|
|
- [ ] Premium feature for High quality
|
|
- [ ] Clear indication of current quality setting
|
|
- [ ] Maximum resolution output for High setting
|
|
|
|
---
|
|
|
|
### FR-700: Settings & Synchronization
|
|
|
|
#### FR-701: iCloud Sync
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Automatic settings synchronization across devices
|
|
- **Acceptance Criteria:**
|
|
- [ ] Available to all users (free and premium)
|
|
- [ ] Real-time sync status with last sync timestamp
|
|
- [ ] Manual "Sync Now" option
|
|
- [ ] Uses Bedrock's CloudSyncManager
|
|
|
|
#### FR-702: Settings Persistence
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** All user preferences stored in SyncedSettings model
|
|
- **Settings Include:**
|
|
- Ring light: size, color ID, custom color RGB, opacity, enabled
|
|
- Camera: position, flash mode, HDR mode, photo quality
|
|
- Display: mirror flip, skin smoothing, grid visible
|
|
- Capture: timer, capture mode, auto-save
|
|
- Premium features: flash sync, center stage
|
|
- **Acceptance Criteria:**
|
|
- [ ] Settings persist across app launches
|
|
- [ ] Debounced saves for slider values
|
|
- [ ] Settings sync via iCloud
|
|
|
|
---
|
|
|
|
### FR-800: Branding & Launch Experience
|
|
|
|
#### FR-801: Animated Launch Screen
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Beautiful branded launch experience
|
|
- **Acceptance Criteria:**
|
|
- [ ] Animated launch with configurable duration
|
|
- [ ] Customizable colors, patterns, and layout
|
|
- [ ] Seamless transition to main app
|
|
- [ ] Uses Bedrock's LaunchScreenConfig
|
|
|
|
#### FR-802: App Icon
|
|
- **Priority:** P2 (Medium)
|
|
- **Description:** Consistent branded app icon
|
|
- **Acceptance Criteria:**
|
|
- [ ] Generated via Bedrock icon system
|
|
- [ ] Matches launch screen branding
|
|
- [ ] Icon generator available in DEBUG builds
|
|
|
|
---
|
|
|
|
### FR-900: Premium & Monetization
|
|
|
|
#### FR-901: Freemium Model
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** Free tier with optional Pro subscription
|
|
- **Free Features:**
|
|
- Basic ring light (2 colors)
|
|
- Photo capture
|
|
- 3-second timer
|
|
- Grid overlay
|
|
- Zoom
|
|
- iCloud sync
|
|
- **Premium Features:**
|
|
- Full color palette + custom colors
|
|
- HDR mode
|
|
- High quality photos
|
|
- Flash sync
|
|
- True mirror mode
|
|
- Skin smoothing
|
|
- Center stage
|
|
- Extended timers (5s, 10s)
|
|
|
|
#### FR-902: RevenueCat Integration
|
|
- **Priority:** P0 (Critical)
|
|
- **Description:** Subscription management via RevenueCat
|
|
- **Acceptance Criteria:**
|
|
- [ ] PremiumManager wraps RevenueCat SDK
|
|
- [ ] PremiumGate utility for consistent feature gating
|
|
- [ ] Entitlement named `pro`
|
|
- [ ] Settings automatically fall back to free defaults when not premium
|
|
|
|
#### FR-903: Paywall
|
|
- **Priority:** P1 (High)
|
|
- **Description:** Pro subscription purchase flow
|
|
- **Acceptance Criteria:**
|
|
- [ ] Clear presentation of premium features
|
|
- [ ] Monthly and yearly subscription options
|
|
- [ ] Restore purchases functionality
|
|
- [ ] Accessible and localized
|
|
|
|
#### FR-904: Debug Premium Mode
|
|
- **Priority:** P3 (Low)
|
|
- **Description:** Testing premium features without subscription
|
|
- **Acceptance Criteria:**
|
|
- [ ] Environment variable `ENABLE_DEBUG_PREMIUM=1`
|
|
- [ ] Only works in DEBUG builds
|
|
- [ ] Unlocks all premium features for testing
|
|
|
|
---
|
|
|
|
## Non-Functional Requirements
|
|
|
|
### NFR-100: Accessibility
|
|
|
|
#### NFR-101: VoiceOver Support
|
|
- **Priority:** P0 (Critical)
|
|
- **Acceptance Criteria:**
|
|
- [ ] All interactive elements have meaningful `.accessibilityLabel()`
|
|
- [ ] Dynamic state uses `.accessibilityValue()`
|
|
- [ ] Actions described with `.accessibilityHint()`
|
|
- [ ] Appropriate traits via `.accessibilityAddTraits()`
|
|
- [ ] Decorative elements hidden with `.accessibilityHidden(true)`
|
|
- [ ] Important events trigger accessibility announcements
|
|
|
|
#### NFR-102: Dynamic Type
|
|
- **Priority:** P0 (Critical)
|
|
- **Acceptance Criteria:**
|
|
- [ ] All text supports Dynamic Type
|
|
- [ ] Custom dimensions use `@ScaledMetric`
|
|
- [ ] UI remains usable at largest text sizes
|
|
|
|
---
|
|
|
|
### NFR-200: Performance
|
|
|
|
#### NFR-201: Camera Performance
|
|
- **Priority:** P0 (Critical)
|
|
- **Acceptance Criteria:**
|
|
- [ ] Smooth, real-time camera preview (30+ fps)
|
|
- [ ] Minimal latency on capture
|
|
- [ ] No UI blocking during photo processing
|
|
|
|
#### NFR-202: Battery Efficiency
|
|
- **Priority:** P1 (High)
|
|
- **Acceptance Criteria:**
|
|
- [ ] Efficient camera usage
|
|
- [ ] Debounced saves reduce iCloud writes
|
|
- [ ] Screen dimming prevention is intentional (user is actively using camera)
|
|
|
|
---
|
|
|
|
### NFR-300: Privacy & Security
|
|
|
|
#### NFR-301: Data Collection
|
|
- **Priority:** P0 (Critical)
|
|
- **Acceptance Criteria:**
|
|
- [ ] No data collection
|
|
- [ ] No analytics
|
|
- [ ] No tracking
|
|
- [ ] Privacy policy reflects minimal data usage
|
|
|
|
#### NFR-302: API Key Security
|
|
- **Priority:** P0 (Critical)
|
|
- **Acceptance Criteria:**
|
|
- [ ] API keys stored in `.xcconfig` files
|
|
- [ ] `Secrets.xcconfig` is gitignored
|
|
- [ ] Template file provided for setup
|
|
|
|
---
|
|
|
|
### NFR-400: Localization
|
|
|
|
#### NFR-401: String Catalogs
|
|
- **Priority:** P1 (High)
|
|
- **Acceptance Criteria:**
|
|
- [ ] Uses `.xcstrings` files for localization
|
|
- [ ] All user-facing strings in String Catalog
|
|
- [ ] Minimum supported languages: English (en), Spanish-Mexico (es-MX), French-Canada (fr-CA)
|
|
|
|
---
|
|
|
|
## Project Structure
|
|
|
|
```
|
|
SelfieCam/
|
|
├── App/ # App entry point with launch screen
|
|
├── Configuration/ # xcconfig files (API keys)
|
|
├── Features/
|
|
│ ├── Camera/ # Main camera UI
|
|
│ │ ├── ContentView.swift # Main screen coordinator
|
|
│ │ ├── Views/ # Camera UI components
|
|
│ │ │ ├── CustomCameraScreen.swift
|
|
│ │ │ ├── RingLightOverlay.swift
|
|
│ │ │ ├── CaptureButton.swift
|
|
│ │ │ ├── ExpandableControlsPanel.swift
|
|
│ │ │ ├── CaptureEventInteraction.swift
|
|
│ │ │ └── ...
|
|
│ │ ├── GridOverlay.swift
|
|
│ │ └── PostCapturePreviewView.swift
|
|
│ ├── Paywall/ # Pro subscription flow
|
|
│ │ └── ProPaywallView.swift
|
|
│ └── Settings/ # Configuration screens
|
|
│ ├── SettingsView.swift
|
|
│ ├── SettingsViewModel.swift
|
|
│ └── ...
|
|
├── Shared/
|
|
│ ├── BrandingConfig.swift # App icon & launch screen config
|
|
│ ├── DesignConstants.swift # Design tokens (uses Bedrock)
|
|
│ ├── Color+Extensions.swift # Ring light color presets
|
|
│ ├── Models/ # Data models
|
|
│ │ ├── CameraFlashMode.swift
|
|
│ │ ├── CameraHDRMode.swift
|
|
│ │ ├── PhotoQuality.swift
|
|
│ │ └── ...
|
|
│ ├── Protocols/ # Shared protocols
|
|
│ │ ├── RingLightConfigurable.swift
|
|
│ │ ├── CaptureControlling.swift
|
|
│ │ ├── CaptureEventHandling.swift
|
|
│ │ └── PremiumManaging.swift
|
|
│ ├── Premium/ # Subscription management
|
|
│ │ └── PremiumManager.swift
|
|
│ ├── Services/ # App services
|
|
│ │ └── PhotoLibraryService.swift
|
|
│ └── Storage/ # Persistence
|
|
│ └── SyncedSettings.swift
|
|
└── Resources/ # Assets, localization
|
|
├── Assets.xcassets/
|
|
│ ├── AppIcon.appiconset/
|
|
│ ├── LaunchBackground.colorset/
|
|
│ └── ...
|
|
└── Localizable.xcstrings
|
|
```
|
|
|
|
---
|
|
|
|
## Dependencies
|
|
|
|
| Dependency | Purpose | Integration |
|
|
|------------|---------|-------------|
|
|
| **Bedrock** | Design system, branding, cloud sync | Local Swift package |
|
|
| **MijickCamera** | Camera capture and preview | SPM dependency |
|
|
| **RevenueCat** | Subscription management | SPM dependency |
|
|
|
|
---
|
|
|
|
## Premium Feature Gating Pattern
|
|
|
|
All premium features use centralized `PremiumGate` utility:
|
|
|
|
```swift
|
|
// Getter pattern - returns free default if not premium
|
|
var isMirrorFlipped: Bool {
|
|
get { PremiumGate.get(cloudSync.data.isMirrorFlipped, default: false, isPremium: isPremiumUnlocked) }
|
|
set {
|
|
guard PremiumGate.canSet(isPremium: isPremiumUnlocked) else { return }
|
|
updateSettings { $0.isMirrorFlipped = newValue }
|
|
}
|
|
}
|
|
```
|
|
|
|
---
|
|
|
|
## Premium Feature Matrix
|
|
|
|
| Feature | Free Value | Premium Value |
|
|
|---------|-----------|---------------|
|
|
| Ring light colors | Pure White, Warm Cream | All presets + custom |
|
|
| Timer options | Off, 3s | Off, 3s, 5s, 10s |
|
|
| Photo quality | Medium | Medium, High |
|
|
| HDR mode | Off | Off, On, Auto |
|
|
| True mirror | Off | Configurable |
|
|
| Skin smoothing | Off | Configurable |
|
|
| Flash sync | Off | Configurable |
|
|
| Center stage | Off | Configurable |
|
|
|
|
---
|
|
|
|
## Known Limitations
|
|
|
|
### Camera Control Button Light Press
|
|
|
|
**Status:** Not Working - Needs Investigation
|
|
|
|
The Camera Control button (iPhone 16+) full press works for photo capture, but the light press (secondary action) does not work.
|
|
|
|
**What Works:**
|
|
- Camera Control full press → triggers photo capture
|
|
- Volume up/down → triggers capture
|
|
|
|
**What Doesn't Work:**
|
|
- Camera Control light press → no event received
|
|
- Camera Control swipe gestures (zoom) → Apple-exclusive API
|
|
|
|
**Possible Causes:**
|
|
1. Light press may be restricted to first-party apps
|
|
2. MijickCamera session may interfere with light press detection
|
|
3. Accessibility settings may need explicit enablement
|
|
|
|
**User Workaround:**
|
|
Check Settings > Accessibility > Camera Control:
|
|
- Ensure Camera Control is enabled
|
|
- Ensure Light-Press is turned ON
|
|
- Adjust Light-Press Force if needed
|
|
|
|
---
|
|
|
|
## Future Enhancements
|
|
|
|
Potential areas for expansion:
|
|
|
|
- [ ] Real-time filters (beauty, color grading)
|
|
- [ ] Gesture-based capture (smile detection)
|
|
- [ ] Widget for quick camera access
|
|
- [ ] Apple Watch remote trigger
|
|
- [ ] Export presets (aspect ratios, watermarks)
|
|
- [ ] Social sharing integrations
|
|
- [ ] Camera Control button swipe-to-zoom (if Apple makes API public)
|
|
|
|
---
|
|
|
|
## Required Permissions
|
|
|
|
| Permission | Reason |
|
|
|------------|--------|
|
|
| Camera | Photo preview and capture |
|
|
| Photo Library | Save captured photos |
|
|
| Microphone | May be requested by camera framework (not actively used) |
|
|
| iCloud | Settings synchronization (optional) |
|
|
|
|
---
|
|
|
|
## Development Setup
|
|
|
|
### 1. Clone and Configure
|
|
|
|
```bash
|
|
git clone https://github.com/yourusername/SelfieCam.git
|
|
cd SelfieCam
|
|
cp SelfieCam/Configuration/Secrets.xcconfig.template SelfieCam/Configuration/Secrets.xcconfig
|
|
```
|
|
|
|
### 2. Add API Key
|
|
|
|
Edit `Secrets.xcconfig`:
|
|
```
|
|
REVENUECAT_API_KEY = appl_your_actual_api_key_here
|
|
```
|
|
|
|
### 3. RevenueCat Setup
|
|
|
|
1. Create RevenueCat account and project
|
|
2. Connect to App Store Connect
|
|
3. Create products and entitlement named `pro`
|
|
4. Copy Public App-Specific API Key to `Secrets.xcconfig`
|
|
|
|
### 4. Test Premium Features
|
|
|
|
Set environment variable in scheme:
|
|
- **Name:** `ENABLE_DEBUG_PREMIUM`
|
|
- **Value:** `1`
|
|
|
|
---
|
|
|
|
## Code Quality Standards
|
|
|
|
- **No magic numbers**: All values from Design constants
|
|
- **Full accessibility**: Every interactive element has VoiceOver support
|
|
- **Protocol-first**: Shared behavior defined via protocols
|
|
- **Separation of concerns**: Views are dumb, ViewModels contain logic
|
|
- **Modern APIs**: Swift 6, async/await, @Observable
|
|
- **Documentation**: Code comments, README, PRD
|
|
|
|
---
|
|
|
|
*This PRD serves as the primary requirements document for SelfieCam development.*
|