Why Vettasy is a desktop app, not a browser tab

The five signals Verified Session checks are facts about the machine, and a browser tab cannot see any of them. That is why Vettasy is a desktop app. It still runs only during the interview, with no background process, no autostart and no administrator rights.

An interview tool that lives in a browser tab can record the call, but it cannot verify it. The signals that make a session verifiable are facts about the machine, and a browser is sealed off from them by design. That is the whole reason Vettasy is a desktop app. Here is what a browser cannot see, and why the app is still narrow.

What a browser cannot see

A web page runs in a sandbox. It can use the camera and microphone you grant it, and nothing else about the computer. It cannot tell:

• whether a window is hidden from screen capture, which is exactly how overlay assistants work;
• whether a known AI copilot process is running;
• whether the camera or microphone is a virtual device rather than physical hardware;
• whether a second monitor is connected.

Overlay assistants rely on this blindness. A candidate can share their whole screen in a browser call, and the assistant's window, hidden from capture, never appears. A tool inside the tab is on the wrong side of the screen.

What the desktop app can see, with consent

Because it runs as a native application, and only after the candidate consents, Vettasy can check five things at the level of the operating system: windows hidden from screen capture, known AI copilot processes, virtual cameras and audio drivers, a second monitor as a fact, and one liveness check at the start. Each is a fact about the machine during the session, with its harmless explanations printed next to it.

None of this involves reading files, keystrokes outside the app, browser history or the screen outside the app. The app sees a short, published list of system facts, and nothing else.

Why it is still narrow

Being a desktop app does not mean being intrusive. The app runs only during the interview: no background process, no autostart, no scheduled task, and no administrator rights. Task Manager on Windows or Activity Monitor on macOS shows nothing running after the call, and the app can be deleted once the interview is over. The installers are code-signed.

The trade is deliberate. A browser tab is convenient and cannot verify anything. A resident agent with deep access could see too much. A signed app that runs only for the interview, checks a short list of system facts with consent, and leaves nothing behind is the point in between, and it is the point that lets an honest interview be provable without turning into surveillance.

Sources

• Vettasy, Verified Session and Trust center. See also is Vettasy safe to install.

Written by the Vettasy team

Vettasy is a desktop application for job interviews. Employers run structured, recorded interviews in it with verified participants. It is free for candidates. Windows and macOS.