The exam still has
to mean something.
Crux is the online exam proctoring and anti-cheating platform purpose-built for the AI era. Five layers of monitoring, a hardened lock-screen across every major OS, and true offline mode — so the credential keeps its weight, even when students have a frontier model in their pocket.
The system was built before any of this was true.
AI cheating in every pocket. Stage 6 load-shedding. Disciplinary backlogs that take a year to clear. Continuous video uploads that crush the network. Read what we hear from real institutions — every week.
"Even if I didn't cheat, the system might falsely accuse me — and I have no way to prove I'm innocent."
"I'm watching twelve hours of recording per exam. The backlog of disciplinary cases is delaying everyone's progress."
"Continuous video uploads from every student are crushing our servers — and the cheating still gets through."
"If the public stops believing online exams are fair, the degree itself starts losing value."
"Power's out again. Wi-Fi's down. The exam window closes in ninety minutes. Now what?"
"We can't have a candidate practising on a credential that an AI helped them earn."
Five layers we'll tell you about.
And one or two we'd rather not advertise. Each layer alone is good. Together they make cheating expensive enough that it stops being worth the trouble — for the student, and for whichever AI is helping them.
A hardened lock-screen
Native shell across macOS, Windows, iPadOS and Android. Sandboxed, tamper-resistant, and impossible to alt-tab into ChatGPT — the screen students operate is the screen we control.
Continuous identity match
Facial verification before the exam, periodically during, and on every return from a break. The student in the seat is the student we registered.
Dual-camera capture
Device camera plus a third-party side camera covers face, hands, screen, and tabletop. The geometry alone makes most cheating physically impossible.
AI-suspect segment flagging
On-device models clip and surface only the moments worth reviewing — multiple faces, abnormal voice, leaving mid-way, eye-line breaks. No more twelve-hour video reviews.
AI-written answer detection
Writing-pattern analysis, similarity comparison across submissions, and AI-text detection — so the answer in front of the marker is plausibly the student's own.
And one or two we keep quiet about.
There are a couple of layers we'd rather not advertise — they work better when the wrong people don't know they're there. Ask us under NDA.
Same exam. Anywhere students are.
One codebase, native shells. macOS, Windows, and Android tablets are live today — iPadOS and Web are in active development.
Not a better proctor. A better system.
The traditional system was built for a world before AI — full-time online, single-platform, designed assuming the network and power would just be there. That's not the world we're in.
Three audiences who can't afford to get it wrong.
Run defensible online exams across the institution.
From K-12 through higher ed. Reduce server load with package-then-upload. Hand teachers and lecturers tools they'll actually use. Stand up to dispute with a clean evidence chain. Pilot one department; expand at your pace.
For schools & universities →Hold the line on the credential.
Multi-layer proctoring built for the moments that decide whether someone can practise. Identity match, AI-text detection, tamper-evident screen lock — designed to withstand appeal.
For certification bodies →High-trust assessment for hiring and recertification.
Spin up role-specific question banks, run remote candidate exams, and ship a defensible report — without standing up your own platform.
For enterprise →A monitored exam, without the friction.
Students see a clean exam — nothing more. Crux runs identity match, gaze tracking, audio analysis, screen-lock, and writing-pattern detection invisibly in the background. The cleaner the screen feels, the more is happening underneath.
Three ways to start. One platform underneath.
Faculty
- Up to 1,000 active students
- Authoring + AI question generation
- Dual-camera proctoring
- Offline exam mode
- Standard support, weekday hours
Institution
MOST CHOSEN- Unlimited students and modules
- All authoring + 5-layer proctoring
- Multi-role workflow (Admin, DC, DSAA, Marker)
- Sampling & moderation tooling
- LMS integration (Moodle and equivalents)
- Priority support, named CSM
Source partner
- Source code under MIT license
- Joint roadmap and feature prioritisation
- Training program for staff and students
- Future co-sales of the platform
- On-site implementation support
Global channel program — open now.
We're recruiting regional partners to bring Crux into local markets. If you have the relationships with ministries, universities, certification boards, or enterprise L&D teams in your region — let's go to market together.
Regional resellers
You know your market — the procurement cycles, the language, the gatekeepers. We hand you the platform, the pricing, and a margin you can actually run a business on.
Implementation partners
Education consultancies and SI firms that already deploy assessment, LMS, or proctoring stacks. White-glove onboarding, training, and pilot facilitation — for the institutions you already serve.
OEM & integrators
LMS, SIS, and credentialing platforms that want to ship integrity-grade exams without building five layers of monitoring themselves. Embed Crux under your brand.
Built where it has to actually work.
South Africa first — where online exam invigilation has to survive Stage 6 load-shedding, mixed device fleets, and high-stakes credentials. If it works here, it works everywhere.
Layers of integrity
Lock-screen, identity match, dual-camera, AI flagging, AI-text detection — plus a couple we keep quiet about. Each one alone is good. Together they end the cheating arms race.
Network during the exam
One handshake to download. Take the exam through Stage 6 load-shedding, off-grid, on entry-level hardware. Answers and evidence package on device, upload later.
Operating systems live today
macOS, Windows, and Android tablets ship now — same exam, same evidence, same standard. iPadOS and Web are in active development. React Native at the core. Tablet-first because tablets cost less and break less.
Common questions about AI-proof exam proctoring.
What schools, certification bodies, and enterprise L&D teams ask before they pilot Crux.
What is AI-proof exam proctoring?
AI-proof exam proctoring means stopping cheating before it happens — not just catching it after. Crux's hardened lock-screen prevents access to ChatGPT and other AI tools during the exam, while five layers of monitoring detect anything that slips through.
How does Crux prevent AI cheating?
Through five integrated layers: a lock-screen that blocks AI tools at the OS level, continuous identity verification, dual-camera capture of the workspace, AI-flagged segment review, and writing-pattern detection. Plus one or two we keep quiet about.
What is online exam invigilation?
Online exam invigilation is the remote supervision of candidates during a digital exam to ensure integrity. Crux provides AI-powered invigilation across macOS, Windows, and Android — combining device, behavioural, and content monitoring without crushing the network with continuous video uploads.
Is Crux an anti-cheating platform or proctoring software?
Both. Most proctoring tools focus on detection. Crux adds prevention: a sandboxed exam environment students cannot exit, eliminating most cheating channels before they open. Detection is the safety net, not the strategy.
Does Crux work offline during load-shedding?
Yes. After a single handshake to download the exam, the device runs fully offline — through Stage 6 load-shedding, dropped Wi-Fi, anything. Answers and evidence are packaged on-device and uploaded once connectivity returns.
Which platforms does Crux support?
macOS, Windows, and Android tablets are live today. iPadOS and Web are in active development. Same exam, same evidence, same standard across every platform.
See Crux with your own exam.
We'll set up a 30-minute walk-through using a paper of yours. Authoring, the student exam surface, evidence flagging, moderation — end to end.