Access Control
If you’re not trained, it won’t turn on. Period.
RFID-based tool authorization that prevents unauthorized equipment operation and creates a complete audit trail of every access attempt. No permission, no power.
The challenge
Dangerous equipment, zero accountability.
Shops and labs rely on trust, training checklists, and paper sign-offs to keep untrained users away from dangerous tools. It doesn’t work.
Untrained users at dangerous equipment
Supervisors step away. Untrained users access saws, presses, and other hazardous equipment — sometimes with catastrophic results.
Paper-based honor systems
Sign-in sheets, clipboards, whiteboards. No verification, no tracking, no accountability when something goes wrong.
Zero audit trail
Who used the laser cutter at midnight? No one knows. No logs, no timestamps, no way to investigate incidents after they happen.
Solo work on dangerous tools
Many facilities require two trained operators for high-risk equipment. Impossible to enforce without real-time monitoring.
Manual user management at scale
200+ students, employees, and contractors. Managing permissions, certifications, and access windows is a full-time job with spreadsheets.
No time-based access control
Different groups need access at different times. Daytime for paid staff, evenings for grad students, weekends for community members. Manual scheduling fails.
The solution
Authorization and accountability. One system.
GRIT Access Control combines RFID tool authorization with complete audit logging. The tool doesn’t turn on unless the user is trained and permitted.
Tool authorization
No permission. No power.
Every tool is gated by an RFID reader and power relay. Badge tap triggers an instant permission check — if the user is trained and authorized, power flows. If not, the tool stays off.
- Per-tool, per-user permission control
- Works with existing RFID badges and IDs
- Training certification enforcement
- Time-based access scheduling
- Minimum-user safety requirements
- Virtual e-stop from dashboard
Audit & compliance
Every tap. Every tool. Logged.
Every access attempt — authorized and denied — is recorded with timestamp, user, and tool. Complete visibility into who used what, when, and whether they were permitted.
- Immutable hardware-level logging
- Authorized and denied attempt records
- Exportable usage reports
- Real-time dashboard visibility
- Certification expiration tracking
- Incident investigation support
Safety you can prove
When an incident happens, you need answers — not guesses. GRIT’s audit trail gives you exactly who accessed what equipment and when, with tamper-proof hardware-level records.
Honest tradeoffs
Should you build it yourself?
Plenty of great makerspaces started with a homemade rig. Here’s the honest tradeoff between rolling your own and running a system someone supports.
If you run a makerspace, you’ve probably seen the build — or built it yourself: an ESP32 wired to an RFID reader, ESPHome on the firmware, and a Flask app on a Raspberry Pi deciding whether the saw gets power. It works, and it’s genuinely good engineering. We build on the same stack, so we’re not here to talk you out of a project you’re proud of.
The build is the easy part. The hard part is everything after the demo works: certification tracking that knows who’s trained on what and when it expires, LMS sync so your student roster stays the source of truth, and hardware-level logging at the reader that nobody can quietly edit after an incident. And when a node goes dark at 11pm before a morning class, a homebrew rig means you’re the one debugging it. A supported system means there’s someone to call.
That’s what GRIT Access Control buys you: makerspace tool access control that holds up past year one, with per-user, per-tool RFID machine authorization, certification expiry, and time-based access windows handled for you. The same idea you’d build yourself — just maintained, logged, and backed by a phone number.
Want to go deeper? Read RFID machine access control for makerspaces — build it or buy it? for the full breakdown, or Woodshop Safety Beyond the Guard on locking down tool access in a school shop.
See it in action
Watch access control work.
Badge tap, permission check, and power delivery — all in under a second.
Step by step
How it works.
User taps their RFID badge — student ID, HID card, or NFC phone — to the reader mounted on the tool.
GRIT Hub verifies: is this user trained? Are they authorized for this tool? Is it within their access window?
Permission granted: the power relay engages, tool receives full power, and the session is logged with a timestamp.
Permission denied: tool stays powered off. The attempt is logged and visible immediately on the dashboard.
While the tool is in use, the system tracks session duration. Badge out or walk away — the system detects it.
Every tap — authorized and denied — is recorded. Export reports for compliance, billing, or incident investigation anytime.
Capabilities
Built for safety. Built to retrofit.
RFID tool authorization
Per-tool permissions enforced at the hardware level. Tap badge, system checks rights instantly. Authorized means powered on.
Works with existing credentials
Student IDs, HID badges, NFC-enabled mobile wallets. No new badge system to deploy or manage.
Training certification tracking
Digital certificates with expiration dates and automated renewal reminders. Sync with Canvas LMS for educational institutions.
Complete audit trail
Every access attempt — authorized or denied — is timestamped and exportable. Who, what, when, every time.
CSV bulk import
Upload 200+ users at once. Migrate from legacy systems, assign permissions, set access windows — no manual entry.
Time-based scheduling
Different access hours per user group. Daytime for staff, evenings for grad students, weekends for community access.
Minimum-user requirements
Prevent solo operation of dangerous tools. System requires 2+ trained users before power is delivered.
Virtual e-stop
Engage emergency stop from the dashboard without a full power-down restart. Immediate safety response, minimal downtime.
Hardware
The gear behind the solution.
Industrial-grade, plug-and-play hardware. Designed and assembled in the USA.
Who it is for
From campus labs to factory floors.
Universities, makerspaces & STEM labs
Control who can operate each tool based on completed training. Track certification status across hundreds of students. Use existing student IDs — no new badges to manage.
Education
- Student ID as RFID badge
- Training certification enforcement
- Canvas LMS integration
- Usage data for budget justification
Manufacturing & industrial shops
Ensure only trained personnel operate dangerous equipment. Maintain OSHA-ready audit trails. Manage permissions across shifts, departments, and contractors.
Commercial
- Per-tool authorization for trained operators
- Shift and time-based access windows
- Compliance-ready audit logs
- CSV bulk import for large teams
Trusted by
Deployed at leading organizations.
University of Illinois
Siebel Center for Design, Architecture Fab Lab, Krannert Center — multi-facility access control across campus.
University of Arizona
Engineering Design Center, Salter Labs, Library Makerspace — student ID integration across three facilities.
Penn State University
Campus Makerspace and Community Access Program — managing student and community member authorization.
Jeld-Wen Manufacturing
6 table saws secured, 30 trained personnel authorized, zero unauthorized access incidents since deployment.
Pella Windows & Doors
Production floor tool authorization with complete audit logging across the manufacturing line.
Stevens Institute of Technology
Center for Innovation makerspace — certification tracking and tool-level access control for students.
We went from paper sign-off sheets to RFID in one semester. Two unauthorized access attempts blocked in week one alone.
Ecosystem
Part of the complete GRIT platform.
Access control integrates seamlessly with GRIT’s full suite of workshop automation.
Get started
Ready to secure your equipment?
Tell us which tools need gating and who should be allowed on them. The engineering team handles the rest.
Access Control
If you’re not trained, it won’t turn on. Period.
RFID-based tool authorization that prevents unauthorized equipment operation and creates a complete audit trail of every access attempt. No permission, no power.
The challenge
Dangerous equipment, zero accountability.
Shops and labs rely on trust, training checklists, and paper sign-offs to keep untrained users away from dangerous tools. It doesn’t work.
Untrained users at dangerous equipment
Supervisors step away. Untrained users access saws, presses, and other hazardous equipment — sometimes with catastrophic results.
Paper-based honor systems
Sign-in sheets, clipboards, whiteboards. No verification, no tracking, no accountability when something goes wrong.
Zero audit trail
Who used the laser cutter at midnight? No one knows. No logs, no timestamps, no way to investigate incidents after they happen.
Solo work on dangerous tools
Many facilities require two trained operators for high-risk equipment. Impossible to enforce without real-time monitoring.
Manual user management at scale
200+ students, employees, and contractors. Managing permissions, certifications, and access windows is a full-time job with spreadsheets.
No time-based access control
Different groups need access at different times. Daytime for paid staff, evenings for grad students, weekends for community members. Manual scheduling fails.
The solution
Authorization and accountability. One system.
GRIT Access Control combines RFID tool authorization with complete audit logging. The tool doesn’t turn on unless the user is trained and permitted.
Tool authorization
No permission. No power.
Every tool is gated by an RFID reader and power relay. Badge tap triggers an instant permission check — if the user is trained and authorized, power flows. If not, the tool stays off.
- Per-tool, per-user permission control
- Works with existing RFID badges and IDs
- Training certification enforcement
- Time-based access scheduling
- Minimum-user safety requirements
- Virtual e-stop from dashboard
Audit & compliance
Every tap. Every tool. Logged.
Every access attempt — authorized and denied — is recorded with timestamp, user, and tool. Complete visibility into who used what, when, and whether they were permitted.
- Immutable hardware-level logging
- Authorized and denied attempt records
- Exportable usage reports
- Real-time dashboard visibility
- Certification expiration tracking
- Incident investigation support
Safety you can prove
When an incident happens, you need answers — not guesses. GRIT’s audit trail gives you exactly who accessed what equipment and when, with tamper-proof hardware-level records.
Honest tradeoffs
Should you build it yourself?
Plenty of great makerspaces started with a homemade rig. Here’s the honest tradeoff between rolling your own and running a system someone supports.
If you run a makerspace, you’ve probably seen the build — or built it yourself: an ESP32 wired to an RFID reader, ESPHome on the firmware, and a Flask app on a Raspberry Pi deciding whether the saw gets power. It works, and it’s genuinely good engineering. We build on the same stack, so we’re not here to talk you out of a project you’re proud of.
The build is the easy part. The hard part is everything after the demo works: certification tracking that knows who’s trained on what and when it expires, LMS sync so your student roster stays the source of truth, and hardware-level logging at the reader that nobody can quietly edit after an incident. And when a node goes dark at 11pm before a morning class, a homebrew rig means you’re the one debugging it. A supported system means there’s someone to call.
That’s what GRIT Access Control buys you: makerspace tool access control that holds up past year one, with per-user, per-tool RFID machine authorization, certification expiry, and time-based access windows handled for you. The same idea you’d build yourself — just maintained, logged, and backed by a phone number.
Want to go deeper? Read RFID machine access control for makerspaces — build it or buy it? for the full breakdown, or Woodshop Safety Beyond the Guard on locking down tool access in a school shop.
See it in action
Watch access control work.
Badge tap, permission check, and power delivery — all in under a second.
Step by step
How it works.
User taps their RFID badge — student ID, HID card, or NFC phone — to the reader mounted on the tool.
GRIT Hub verifies: is this user trained? Are they authorized for this tool? Is it within their access window?
Permission granted: the power relay engages, tool receives full power, and the session is logged with a timestamp.
Permission denied: tool stays powered off. The attempt is logged and visible immediately on the dashboard.
While the tool is in use, the system tracks session duration. Badge out or walk away — the system detects it.
Every tap — authorized and denied — is recorded. Export reports for compliance, billing, or incident investigation anytime.
Capabilities
Built for safety. Built to retrofit.
RFID tool authorization
Per-tool permissions enforced at the hardware level. Tap badge, system checks rights instantly. Authorized means powered on.
Works with existing credentials
Student IDs, HID badges, NFC-enabled mobile wallets. No new badge system to deploy or manage.
Training certification tracking
Digital certificates with expiration dates and automated renewal reminders. Sync with Canvas LMS for educational institutions.
Complete audit trail
Every access attempt — authorized or denied — is timestamped and exportable. Who, what, when, every time.
CSV bulk import
Upload 200+ users at once. Migrate from legacy systems, assign permissions, set access windows — no manual entry.
Time-based scheduling
Different access hours per user group. Daytime for staff, evenings for grad students, weekends for community access.
Minimum-user requirements
Prevent solo operation of dangerous tools. System requires 2+ trained users before power is delivered.
Virtual e-stop
Engage emergency stop from the dashboard without a full power-down restart. Immediate safety response, minimal downtime.
Hardware
The gear behind the solution.
Industrial-grade, plug-and-play hardware. Designed and assembled in the USA.
Who it is for
From campus labs to factory floors.
Universities, makerspaces & STEM labs
Control who can operate each tool based on completed training. Track certification status across hundreds of students. Use existing student IDs — no new badges to manage.
Education
- Student ID as RFID badge
- Training certification enforcement
- Canvas LMS integration
- Usage data for budget justification
Manufacturing & industrial shops
Ensure only trained personnel operate dangerous equipment. Maintain OSHA-ready audit trails. Manage permissions across shifts, departments, and contractors.
Commercial
- Per-tool authorization for trained operators
- Shift and time-based access windows
- Compliance-ready audit logs
- CSV bulk import for large teams
Trusted by
Deployed at leading organizations.
University of Illinois
Siebel Center for Design, Architecture Fab Lab, Krannert Center — multi-facility access control across campus.
University of Arizona
Engineering Design Center, Salter Labs, Library Makerspace — student ID integration across three facilities.
Penn State University
Campus Makerspace and Community Access Program — managing student and community member authorization.
Jeld-Wen Manufacturing
6 table saws secured, 30 trained personnel authorized, zero unauthorized access incidents since deployment.
Pella Windows & Doors
Production floor tool authorization with complete audit logging across the manufacturing line.
Stevens Institute of Technology
Center for Innovation makerspace — certification tracking and tool-level access control for students.
We went from paper sign-off sheets to RFID in one semester. Two unauthorized access attempts blocked in week one alone.
Ecosystem
Part of the complete GRIT platform.
Access control integrates seamlessly with GRIT’s full suite of workshop automation.
Get started
Ready to secure your equipment?
Tell us which tools need gating and who should be allowed on them. The engineering team handles the rest.