Add a document on how to implement check-in system

BACKLOG.md

@@ -2,43 +2,44 @@
 
 ## 📋 Todo
 
-- [ ] Set up project infrastructure
+### High Priority
-- [ ] Design user interface mockups
+- [ ] feat: Check-in system with QR code scanning
-- [ ] Create user dashboard
+
-- [ ] Implement data persistence
+### Medium Priority
-- [ ] Add responsive design
+- [ ] feat: Promoter system with event creation, ticket types creation and metrics display
-- [ ] Write unit tests
+- [ ] feat: Multiple ticket types (early bird, VIP, general admission)
-- [ ] Set up CI/CD pipeline
+- [ ] feat: Email notifications (purchase confirmations, event reminders)
-- [ ] Add error handling
+- [ ] feat: Refund management system
-- [ ] Implement search functionality
+- [ ] feat: Real-time sales analytics dashboard
-- [ ] Add user profile management
+- [ ] feat: Guest checkout without account creation
-- [ ] Create admin panel
+- [ ] feat: Seat selection with interactive venue maps
-- [ ] Optimize performance
+- [ ] feat: Dynamic pricing based on demand
-- [ ] Add documentation
+
-- [ ] Security audit
+### Low Priority
-- [ ] Deploy to production
+- [ ] feat: SMS integration for ticket delivery and updates
+- [ ] feat: Mobile wallet integration
+- [ ] feat: Multi-currency support
+- [ ] feat: Event updates communication system
+- [ ] feat: Bulk operations for group bookings
+- [ ] feat: Fraud prevention and bot protection
+- [ ] feat: Social login options
+- [ ] feat: Event recommendations system
+
+### Design & Infrastructure
+- [ ] style: Rewrite design system
+- [ ] refactor: Rewrite design mockup
 
 ## 🚧 Doing
 
-- [ ] refactor: Moving checkout to OrdersController
 
 ## ✅ Done
 
-- [x] Initialize git repository
-- [x] Set up development environment
-- [x] Create project structure
-- [x] Install dependencies
-- [x] Configure build tools
-- [x] Set up linting rules
-- [x] Create initial README
-- [x] Set up version control
-- [x] Configure development server
-- [x] Establish coding standards
-- [x] Set up package.json
-- [x] Create .gitignore file
-- [x] Initialize npm project
-- [x] Set up basic folder structure
 - [x] Configure environment variables
 - [x] Create authentication system
 - [x] Implement user registration
 - [x] Add login functionality
+- [x] refactor: Moving checkout to OrdersController
+- [x] feat: Payment gateway integration (Stripe) - PayPal not implemented
+- [x] feat: Digital tickets with QR codes
+- [x] feat: Ticket inventory management and capacity limits
+- [x] feat: Event discovery with search and filtering