Master Key System Generator
Powered by the WLS Locksmith Tool's Atlas Engine
What This Tool Does
The Master Key System Generator is a browser-based master key system design tool created for mobility and accessibility.
- Only stores data you generate on your device, no random cloud server
- Builds full master key systems with up to 4-level hierarchy structures
- Generates key bitting progression using MACS-aware filtering and cross-key elimination
- Supports conventional & IC cylinder workflows
- Produces workflow-ready output for direct use in cylinder pinning
System Generation Workflow
The generator follows a structured process that mirrors industry typical system design standards:
- Input Definition: Choose a DSD and enter your system information for records
- Random TMK or manual input Randomly generate master, sub-master key or provide manual input
- Progression Engine: Set hold/progression rules and see key quantities before generating
- Pin Translation: Build cylinder pinning combinations by "quick keying" to auto-select parent keys or create custom configurations by selecting keys individually.
- Output Layer: Creates tree view for a collapsing list of keys, pinning clipboard entries, and export files
Key Features Inside the Generator
- Color-coded key status (active, inactive, restricted)
- Real-time system tree visualization
- Running pinout sheet generation
- Cylinder quantity tracking and cumulative pin totals
- Clipboard-based batch export for quick and easy printing, sharing, or carry-over to office software.
- JSON save and reload for project management edits and updates
MACS & Cut Logic
The system uses MACS (Maximum Adjacent Cut Specification) rules to prevent invalid key combinations. This ensures generated systems are mechanically realistic for your intended hardware.
- Prevents illegal adjacent cut combinations
- Maintains manufacturer-compatible progression spacing
- Supports multiple 5, 6, and 7 cut variations of industry common keyways
- Automatically eliminates cross keys from systems during generation
JSON System Persistence
Every system can be saved as a JSON file that fully restores state inside the generator. This includes hierarchy structure, key status flags, and clipboard pinning data.
- No server-side storage of system data
- Full offline reload support
- Preserves live edits and workflow state
Pinstack Integration
Generator output feeds directly into the pinstack calculator for cylinder-level pinning work. This allows full system-to-cylinder translation without re-entering data.
- Direct conversion of key bittings into pin stacks
- Supports full IC pin displays for control key support
- Compatible with standalone pinstack tool