Overview
SecRandom stands as a beacon at the intersection of fairness and randomness
A random selection tool carefully designed for classrooms, teams, activities and more, ensuring every choice is fair and transparent.
System Compatibility Notice
Important Notice: Starting from version v1.3.1.5, SecRandom has stopped support for Windows 7 and 32-bit systems. We strongly recommend using Windows 10 or higher for continued features and stable updates. Windows 7 and x86 users can download and use version v1.3.1.5 here.
Linux Support Notice
Starting from version 2.0, SecRandom will officially provide support for Linux operating systems, offering deb format packages for x86 architecture.
Open Source License
SecRandom is open source under the GNU GPL-3.0 license. You are free to use, modify, and distribute this software, but modified versions must also be open source under the GPL-3.0 license.
Quick Start
What is it?
SecRandom is a fair random selection system designed specifically for educational scenarios, using intelligent dynamic weight algorithms to ensure every member gets fair selection opportunities. SecRandom is built with Python 3.13.5, uses PySide6 + PySide6-Fluent-Widgets for UI, and adopts Microsoft Fluent Design language, combining fairness, ease of use, and aesthetics.
Core Advantages
- Zero Learning Curve: Intuitive interface, easily complete random selection
- Multi-scenario Coverage: Full coverage of roll call/lottery, single/multiple/group/gender selection
- Algorithm Guarantee: Cryptographic-level random algorithm with intelligent dynamic weights ensuring fairness
- Privacy Protection: Local encrypted storage, data never exposed and protected from malicious tampering
- Modern Design: Win11 Fluent Design inspired, clean and elegant
Applicable Scenarios
Education
- Classroom Roll Call: Randomly select students to answer questions, avoiding subjective bias
- Random Grouping: Fairly assign group tasks, promoting team collaboration
- Question Lottery: Enliven classroom atmosphere, stimulate student participation
Corporate Events
- Annual Meeting Lottery: Fairly distribute prizes, enhance event fun
- Team Grouping: Randomly form project teams, promote cross-department collaboration
- Welfare Distribution: Fairly distribute employee benefits, demonstrate corporate care
Other Scenarios
- Competition Selection: Randomly determine contestant appearance order
- Activity Organization: Random lottery, lucky audience selection
- Fair Opportunity Distribution: Any scenario requiring fair random selection
Core Features
Selection Modes
Roll Call Mode
- Single Person Selection: Randomly choose one student
- Multiple Person Selection: Select multiple students at once
- Group Selection: Extract by preset group rules
- Gender Selection: Precise selection by gender criteria
Lottery Mode
- Prize Weight Setting: Different prizes can have different winning probabilities
- Prize Pool Management: Flexible management of prize information
- Result Display: Clear display of winners and prizes
Quick Selection
- Floating Window Selection: Call up small floating window anytime for quick selection
- Shortcut Key Support: Customizable shortcut keys, one-click selection
- Uninterrupted Teaching: Selection process doesn't affect normal teaching flow
Smart Settings
Fair Selection Algorithm
SecRandom uses intelligent dynamic weight algorithms combined with average value difference protection mechanisms to ensure every member gets fair selection opportunities:
- Dynamic Weight: The more times someone is selected, the lower their probability of being selected again
- Cold Start Protection: New members or long-unselected members won't lose opportunities due to low weights
- Average Value Filtering: Only members with selection count ≤ average are allowed in the candidate pool
- Maximum Gap Protection: When the gap between maximum and minimum selection counts exceeds a threshold, extreme values are excluded
- Candidate Pool Size Guarantee: Ensure candidate pool is not smaller than the set minimum size
- Real-time Probability Visualization: Display each member's selection probability, fairness is visible
Data Management
List Management
- Multi-list Support: One program manages multiple class lists, simpler operation
- List Import: Support Excel (.xls/.xlsx), CSV format file import
- List Export: Support exporting student lists, convenient for backup and migration
- Student Information: Complete information including name, student ID, gender, group, avatar
History Records
- Complete Records: Automatically record time and results of each selection
- Record Filtering: Support filtering history by time, mode, etc.
- Auto Cleanup: Can set automatic cleanup of expired records
- Data Statistics: Selection count statistics, weight analysis
Privacy & Security
Multi-layer Protection
- Password Protection: Support setting password to protect settings page
- TOTP Two-factor Authentication: Support time-based one-time passwords
- USB Binding: Support binding USB devices as security verification
- Data Encryption: Sensitive data encrypted storage, prevent malicious tampering
- Local Storage: Data never exposed, fully under your control
User Experience
Modern Design
- Theme Switching: Light/Dark theme auto-switching, adapt to different environments
- Smooth Animations: Exquisite selection animation experience
- System Tray: System tray resident, convenient quick access
- Startup on Boot: Windows system supports startup on boot, ready in background
Voice Broadcast
- Edge TTS: Support Microsoft Edge voice engine, clear and natural voice
- Local Voice: Support local pyttsx3 voice engine
- Instant Broadcast: Selection results instantly voice broadcast, whole class knows
Software Integration
- ClassIsland Integration: Support integration with ClassIsland software for more convenient roll call result display
- IPC/URL Call: Support calling through IPC/URL interface, seamless integration with other software
Quick Start
1. Download and Install
Get the latest version from Download Page, choose the appropriate installation package for your operating system:
- Windows Users: Download .exe installer or .zip archive
- Linux Users: Download .deb installation package
2. Launch Program
- Windows: Double-click
SecRandom.exeto launch the program - Linux: Launch through application menu or command line
3. Import List
- Click the "Settings" button in the top right corner of the main interface
- Select "List Management"
- Click the "Import List" button
- Select Excel (.xls/.xlsx) or CSV format student list file
- Confirm import information, complete list import
4. Configure Parameters (Optional)
- Go to "Settings" page
- Configure selection parameters as needed:
- Selection mode (single/multiple/group/gender)
- Number of selections
- Whether to enable dynamic weights
- Whether to enable voice broadcast
- Theme settings, etc.
5. Start Selection
- Return to main interface
- Select selection mode (roll call/lottery)
- Set selection parameters
- Click "Start Selection" button
- View selection results
6. View History Records
- Click the "History Records" button on the main interface
- View all selection history
- Support filtering and exporting history records
System Requirements
Windows
- Operating System: Windows 10 or higher (Windows 7 not supported)
- Architecture: x64 (32-bit systems not supported)
- Recommended Configuration: 4GB RAM or higher
Linux
- Operating System: Mainstream Linux distributions (Ubuntu, Debian, Fedora, etc.)
- Architecture: x64
- Note: Some features may be limited (such as startup on boot, certain system-level features)
Not Supported
- macOS: macOS is not currently supported
Join Community
- QQ Group：833875216
- QQ Channel: SECTLStudio
- Discord: SECTL Studio
- bilibili：SECTL思拓创联
Make every random selection meaningful, let every fairness shine bright!
Zero Learning Curve · Fair & Transparent · Privacy Protection · Modern & Elegant
Contributors
Changelog
4f325-on
Copyright
Copyright Ownership:SECTL
License under:CC BY-NC-SA 4.0