Skip to main content
Invisible Overlay

An undetectable AI interview assistant — explained, not just claimed

InterviewPilot's overlay renders below the OS window-capture layer, using a documented Windows API — not a vague promise. Here's exactly what that means and where its limits are.

The mechanism, not just the claim

"Undetectable" gets used loosely across this whole product category. We'd rather name the actual mechanism: Windows lets an application exclude one of its own windows from every screen-capture surface the operating system services, via an API called SetWindowDisplayAffinity with the flag WDA_EXCLUDEFROMCAPTURE. Set it, and the window renders normally on your own monitor while disappearing from Zoom shares, Teams recordings, Google Meet, Webex, and tools like OBS Studio — all of which read from the same OS-managed capture surface. We've written a full technical breakdown of how this actually works, with the exact API signature.

Why this is verifiable, not just a promise

This is a real, Microsoft-documented API — you can go read the reference yourself, rather than trusting a vendor's word for it. That's the whole point of explaining the mechanism instead of just asserting the outcome: a claim you can verify is worth more than one you have to take on faith.

What it doesn't cover — stated plainly

  • It doesn't hide the running process from Task Manager — the process is visible under its own name, though InterviewPilot runs under a neutral process name rather than announcing itself.
  • It has no effect on audio — whatever your microphone picks up is transmitted normally.
  • It doesn't defend against a physical camera pointed at your monitor — this is a software compositor feature, not a hardware one.
  • The mechanism described here is Windows-only. A macOS build is in beta and not yet released.

None of this changes whether you can explain your own answer if asked a follow-up question — see our post on how interview cheating detection actually works for why that's the part that matters most, independent of any screen-capture mechanism.

Further reading

Frequently asked questions

It means the overlay window is excluded from screen-share and recording capture surfaces at the Windows operating-system level — a documented API called SetWindowDisplayAffinity with the WDA_EXCLUDEFROMCAPTURE flag. You still see it on your own monitor; anyone viewing your shared screen or a recording of it does not.

Yes — because the exclusion happens at the OS compositor level, it applies to any application reading from the same Windows capture surfaces, which includes Zoom, Microsoft Teams, Google Meet, Webex, and screen-recording tools like OBS Studio. See our platform-by-platform breakdown.

No, and we'd rather say that plainly than oversell it. It excludes the window from software-mediated screen capture. It does not hide the running process from Task Manager, does not affect audio, and has no effect on a physical camera pointed at your monitor. See our full technical explainer for the exact boundary.

Not yet. The released app is Windows 10 (version 2004+) and Windows 11 only, and this page describes the Windows mechanism (introduced in the Windows 10 May 2020 Update). A macOS build is in beta — join the waitlist on the download page. There is no Linux version.

Explore InterviewPilot

Bring backup into your next round.

Install InterviewPilot, upload your resume, and walk in with structured answers a keystroke away — visible to you and nobody else.