AI Overlay for Prometric ProProctor - USMLE and Medical Boards on Mac

Prometric ProProctor is the online-delivered branch of Prometric, headquartered in Baltimore since the original 1990 Drake Prometric era. It powers remote sittings for USMLE Steps, GMAT online, MCAT make-ups, and dozens of healthcare and nursing boards.

ProProctor on Mac is delivered as a Chrome-based experience plus a small launcher binary; Safari and Firefox are not supported. Once the launcher connects, your screen is shared over WebRTC to a Prometric Readiness Agent, who then hands off to a live proctor for the exam. Capture goes through Chrome tab and display capture path, which on macOS is wired to ScreenCaptureKit on Sonoma+ and to the older CGDisplayStream code on Monterey. Both paths read from a frame buffer that the window-server has already filtered for windows marked as excluded from capture.

The launcher does a basic process enumeration looking for known screen-share apps (Zoom, Teams, AnyDesk). Fracture ships with a randomized bundle ID and an innocuous display name per build.

The agent sees the same WebRTC stream the proctor will see. The overlay is filtered out by macOS before the frame reaches Chrome.

The overlay is technically invisible to ProProctor capture, but USMLE policy forbids AI assistance and treats it as exam misconduct.

It uses input monitoring to detect keystroke patterns suggesting copy-paste from a clipboard manager. The overlay does not paste into the exam window.