148 lines
5.0 KiB
Markdown
148 lines
5.0 KiB
Markdown
# ATM Machine Specification Document
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## 1. System Overview
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**Product Name:** SecureBank ATM Model SB-5000
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**Version:** 1.0
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**Purpose:** Self-service banking terminal for cash withdrawal, deposits, balance inquiries, and basic account transactions
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## 2. Functional Requirements
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### 2.1 Core Functions
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- **Cash Withdrawal:** Support withdrawals in denominations of $20, $50, and $100 (configurable)
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- **Cash Deposit:** Accept cash deposits with bill validation and counting
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- **Balance Inquiry:** Display current account balance for checking and savings accounts
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- **Fund Transfer:** Enable transfers between customer's own accounts
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- **PIN Change:** Allow customers to change their PIN securely
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- **Mini Statement:** Print last 10 transactions
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### 2.2 Transaction Limits
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- Maximum withdrawal per transaction: $500
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- Maximum withdrawal per day: $1,000 (configurable)
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- Maximum deposit per transaction: $5,000
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- Transaction timeout: 60 seconds of inactivity
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## 3. Hardware Requirements
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### 3.1 Physical Components
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- **Card Reader:** EMV chip card and magnetic stripe reader (ISO 7816 compliant)
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- **Cash Dispenser:** 4-cassette system, capacity 2,000 bills per cassette
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- **Cash Acceptor:** Bill validator with counterfeit detection
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- **Receipt Printer:** Thermal printer, 80mm width
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- **Display:** 15-inch touchscreen LCD (1024x768 resolution)
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- **Keypad:** Encrypted PIN pad with physical keys
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- **Camera:** Two surveillance cameras (customer-facing and cash area)
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### 3.2 Physical Specifications
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- **Dimensions:** 1600mm (H) x 800mm (W) x 600mm (D)
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- **Weight:** Approximately 250 kg
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- **Safe Rating:** UL 291 Level 1 certified
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- **Power Requirements:** 110-240V AC, 50/60Hz, 500W maximum
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## 4. Software Requirements
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### 4.1 Operating System
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- Hardened Windows 10 IoT Enterprise or Linux-based embedded OS
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- Real-time monitoring and health check capabilities
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### 4.2 Application Software
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- ATM controller software with multi-language support (minimum 3 languages)
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- Transaction processing engine
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- Remote monitoring and diagnostics software
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- Automated software update capability
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- Comprehensive audit logging system
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### 4.3 Communication Protocols
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- ISO 8583 messaging standard for financial transactions
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- TCP/IP network protocol
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- SSL/TLS encryption for all communications
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- Support for NDC+ and DDC protocols
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## 5. Security Requirements
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### 5.1 Physical Security
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- Anti-skimming devices on card reader
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- Tamper-evident sensors and alarms
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- Reinforced steel safe with time-delay lock
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- Anchor bolts for secure installation
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- Anti-vandalism coating and materials
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### 5.2 Data Security
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- Triple DES or AES-256 encryption for PIN blocks
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- End-to-end encryption for all sensitive data
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- PCI-DSS compliance for payment card data
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- Secure key management system (DUKPT)
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- No storage of card magnetic stripe data
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### 5.3 Authentication
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- Customer authentication via PIN (minimum 4 digits, maximum 6 digits)
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- Card authentication via EMV chip validation
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- Maximum 3 incorrect PIN attempts before card retention
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## 6. User Interface Requirements
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### 6.1 Display Interface
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- Clear, intuitive menu navigation
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- High contrast for outdoor visibility
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- Accessibility features for visually impaired users (audio guidance option)
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- Transaction progress indicators
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- Clear error messages and instructions
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### 6.2 Response Time
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- Card insertion to welcome screen: < 3 seconds
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- Transaction authorization: < 10 seconds
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- Cash dispensing: < 15 seconds from authorization
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## 7. Network and Connectivity
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### 7.1 Network Requirements
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- Primary: Secure broadband connection (minimum 1 Mbps)
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- Backup: 4G/LTE cellular connection
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- Automatic failover between primary and backup
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- VPN tunnel to host processor
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### 7.2 Availability
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- System uptime: 99.5% excluding scheduled maintenance
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- Maximum network latency: 500ms to host
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- Automatic reconnection after network disruption
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## 8. Environmental Requirements
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- **Operating Temperature:** 10°C to 40°C (50°F to 104°F)
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- **Storage Temperature:** -20°C to 60°C (-4°F to 140°F)
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- **Humidity:** 20% to 80% non-condensing
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- **Installation:** Indoor or outdoor (with weather-resistant enclosure)
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## 9. Compliance and Standards
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- ADA (Americans with Disabilities Act) compliant
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- PCI-PTS certified for secure payment terminals
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- EMV Level 1 and Level 2 certified
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- ISO 9001 quality management standards
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- Local banking regulations and Central Bank requirements
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## 10. Maintenance and Support
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### 10.1 Monitoring
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- 24/7 remote monitoring and alerting
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- Automated cash level tracking
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- Predictive maintenance alerts
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- Transaction success rate monitoring
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### 10.2 Maintenance Schedule
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- Preventive maintenance: Quarterly
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- Cash replenishment: As needed (low cash alert at 20% capacity)
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- Receipt paper replacement: As needed
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- Software updates: Monthly security patches
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## 11. Service Level Agreements
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- Critical issue response time: 4 hours
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- Hardware repair completion: 24 hours
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- Parts availability: 48 hours
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- Mean time between failures (MTBF): > 20,000 hours
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---
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This specification provides a comprehensive framework for an ATM system that can be used for test case design and validation.
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