Note: The core lockdown and test delivery features work across Windows, Mac, and Chromebook, but the advanced features (proctoring, 3rd party apps, monitoring tools, system checks, assistive technology) are IIB-specific and limited to Windows and Mac. Chromebook lockdown relies heavily on Chrome OS built-in security rather than application-level controls.
| # | IIB Features | Chromebook PWA | Windows | macOS |
| 1 | Platform Support | Chrome OS |
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| 2 | Secure lockdown test delivery | Full lockdown; relies on Kiosk Mode | Full lockdown | Full lockdown |
| 3 | Security policies (Strict, Moderate, Open) | Strict mode only | Applicable | Applicable |
| 4 | Encrypted communication (HTTPS/TLS 1.3) | Supported | Supported | Supported |
| 5 | External display detection & monitoring | Flagged in the Monitor tool | Flagged in the Monitor tool | Flagged in the Monitor tool |
| 6 | Invigilator password / SEB PIN | Works across the platform | Works across the platform | Works across the platform |
| 7 | User types (One-time, Permanent, SSO/FEIDE/Shibboleth) | Supported | Supported | Supported |
| 8 | Test start/end time modification | Platform-independent (server-side) | Platform-independent (server-side) | Platform-independent (server-side) |
| 9 | Offline submission (save as file) | Available, though Chromebook requires USB for offline submission | Available | Available |
| 10 | 3rd Party Application Support | Not supported | Supported | Mac TBD after POC |
| 11 | Inspera Resilience Proctoring (IRP) | Not Supported | Supported | Supported |
| 12 | Proctoring recording options (Video, Audio, Screen, Room Scan) | Not Supported | Supported | Supported |
| 13 | ID verification (automated/manual) | Not Supported | Supported | Supported |
| 14 | Assistive Technology (screen readers: JAWS, Narrator, VoiceOver) | Not Supported | Supported | Supported |
| 15 | Allow candidates to change WiFi | Not Supported | Supported | Supported |
| 16 | Device ID check | Not Supported | Supported | Supported |
| 17 | Keyboard Layout Check | Not Supported | Supported | Supported |
| 18 | Blocklist of Programs | Not Supported | Supported | Supported |
| 19 | Virtual Machine detection | Not Supported | Supported | Supported |
| 20 | Exam Monitoring Tools (Confidence Level, Warnings, Device Security Flags) | Not Supported | Supported | Supported |
| 21 | Debug and Forensic Logs | Not Supported | Supported | Supported |
| 22 | System Checks (App version, power state, environment, CPU features, process blocklist, etc.) | Not Supported | Supported | Supported |