In this article
Before you start
This page sits in the interview process learning path, which shows where online tests and live rounds fit in a hiring loop.
Why interviewers ask this
A candidate who asks about a lockdown browser is really asking what the rules of a test are. Hiring teams and schools both want the work to be the candidate's own, so they limit the tools around the test. The question therefore separates people who read the instructions and plan inside them from people who guess.
A weak answer says "a lockdown browser catches AI." A strong answer says what the browser actually controls, names what it does not control, and treats the written rules of the platform as the deciding fact. A Staff-level answer adds that a rule set can also permit AI, as in an AI-assisted coding interview, where the grading changes with the rules.
This page reports no company practice. It reads the vendor's own description of the tool and says plainly where no source was found.
Lockdown browser AI interview from first principles
- Lockdown browser
- A lockdown browser is a locked-down web browser that runs an online test full-screen and blocks other applications, copying, printing and task switching, so what it controls is the device the test runs on, not the answers.
In plain words
Picture a sealed exam hall. The door is locked, bags stay outside, and a supervisor watches the room. A lockdown browser is the locked room on your computer. It does not read your answers. The analogy breaks in one place: a real hall has a person judging behavior, while the browser only enforces limits.
In one precise sentence, a lockdown browser restricts what the device can do during a test; it does not score what you write. In the phrase "lockdown browser AI interview", AI means an assistant that writes or suggests answers. The question is whether one can run beside the locked test, and what the rules say about it.
Step 1: Three different things are called a lockdown browser
The phrase names three layers, and a candidate must know which one is in play.
The first is the lockdown browser in the narrow sense. The University of Alabama in Huntsville describes Respondus LockDown Browser as "a custom browser that locks down the testing environment" inside a learning management system. A lockdown browser acts on the device and the assessment window. Respondus says over 2,000 institutions use it as of October 2026, and its customers are schools and universities.
The second is a webcam monitor. The third is a platform's own browser-based monitoring and rules. This page has no source for what any named hiring platform records, so for that layer you read the platform's candidate instructions. This page also found no public source that an AI lab or big tech company uses Respondus for interviews, so treat that as unconfirmed.
Text description of the diagram
- A lockdown browser acts on the device and the assessment window.
- A webcam monitor acts on the person, not the answers.
Step 2: The device layer blocks the tools around the test
The device layer blocks other applications, the clipboard and screen capture. The vendor lists its controls in plain terms, and the table quotes them. The University of Alabama in Huntsville says both the Windows and the Mac editions are based on Chromium. Chromium is Google's open source browser framework.
| What the vendor says (Respondus, page modified July 2026) | What it acts on |
|---|---|
| "Assessments are displayed full-screen and cannot be minimized" | The test window |
| "Prevents access to other applications including messaging, screen-sharing, virtual machines, and remote desktops" | Other programs |
| "Printing and screen capture functions are disabled" | Screen output |
| "Copying and pasting anything to or from an assessment is prevented" | The clipboard |
| "Right-click menu options, function keys, keyboard shortcuts and task switching are disabled" | Keyboard and menus |
| "An assessment cannot be exited until the student submits it for grading" | The exit path |
| "Assessments that are set up for use with LockDown Browser cannot be accessed with other browsers" | The choice of browser |
Read against an AI helper, an assistant that runs as a separate app, in another window or by pasted text sits on the vendor's blocked list. This page gives no way around the browser and claims no tool survives it. Using outside help against the rules of a test is the risk the candidate carries.
The vendor's list describes controls on the computer the browser runs on and names no control over another device in the room, so a second device is outside what that list covers; a camera layer, described next, exists for the person rather than the device. The common belief that it only blocks websites is also wrong: the vendor lists applications, virtual machines, remote desktops and the clipboard.
Step 3: The camera layer watches the person, not the answers
A webcam monitor acts on the person, not the answers. Respondus Monitor is, in the words of the University of Alabama in Huntsville, a companion application for the lockdown browser that uses webcam and video technology. As a companion application it is a separate layer from the browser itself, so a candidate should not assume that one implies the other.
Neither source describes either layer as judging the content of an answer. The browser limits the device. The monitor records the person. Whoever sets the test decides whether recordings are reviewed, and by whom, so the instructions again matter more than the product name.
An interview platform that reviews recordings with automated tools is a third category and has its own documentation. If your invitation names such a platform, read its candidate help pages before the day.
Step 4: The rules layer decides what AI help is allowed
The rules layer decides what AI help is allowed, and it is written in the instructions of the specific assessment, not in the browser. Some assessments ban outside tools. Some permit them and even provide an assistant, which is the setting of an AI-assisted coding interview. A browser that blocks other applications and a test that welcomes a built-in assistant can both exist, because they sit on different layers.
If the instructions are unclear, ask the recruiter in writing before the test day and keep the reply. That one message removes most of the risk. Neither the browser nor the camera layer can tell you what is permitted; only the instructions of that specific test can.
| Scenario (illustrative) | Layer in play | Sensible action |
|---|---|---|
| A school quiz opens only in a locked browser | Device layer | Prepare without outside tools, since the vendor lists other applications as blocked |
| A company test says AI tools are allowed and shows an assistant panel | Rules layer | Use the permitted tool as the instructions describe and explain your reasoning |
| Instructions say no outside help but name no software | Rules layer | Ask the recruiter in writing what is allowed before the test day |
Step-by-step description
- Three things share the name.
- Applications and the clipboard are blocked.
- The person is recorded, not the answers.
- The written rules decide allowed help.
- The device layer blocks other applications, the clipboard and screen capture.
- The rules layer decides what AI help is allowed.
Knowing it is half the job. Saying it is the other half.
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Start Free Trial →The Staff-level answer
What does a lockdown browser do in an AI interview, and can an AI helper run beside it?
A lockdown browser is a locked-down testing client. It runs the assessment full-screen and, by the vendor's own list, blocks other applications, the clipboard, printing and screen capture. It controls the device, not the answers. Camera monitoring is a separate layer, and the platform's written rules are a third. So I would not plan around an outside assistant. I would ask which layer is in play, read what the rules allow, and prepare so the work is mine. If the rules permit AI, I would use it as written and explain my reasoning aloud.
What makes this Staff-level is that it separates the three layers, treats the written rules as the deciding fact, and says what the evidence does not cover.
The rubric
| Dimension | Weak answer | Strong answer | Staff answer |
|---|---|---|---|
| Correctness | Calls it an AI catcher | Says it restricts the device | Names three layers and what each acts on |
| Depth | Names one product | Cites the vendor's list of controls | Adds that other platforms differ and are unverified |
| Trade-offs | Treats tools as a contest | Says the rules decide allowed help | Plans preparation inside the stated rules and asks when they are unclear |
| Communication | Makes vague claims | States the layers in order | Answers briefly, then offers detail on request |
| Follow-up readiness | Has no next point | Knows what the camera layer adds | Can explain how AI-permitted rounds are graded |
Three variants of this question
Does a lockdown browser block screen sharing and virtual machines?
Yes, by the vendor's own description. Respondus says it "prevents access to other applications including messaging, screen-sharing, virtual machines, and remote desktops," and that printing and screen capture are disabled. The statement comes from the vendor's page, as of October 2026.
Is a lockdown browser the same as a webcam monitor?
No. The lockdown browser is the locked testing client, and the webcam monitor is a companion application that adds webcam and video recording. A test can name either, both or neither, so read which one the instructions mention.
What if the company says AI tools are allowed in the interview?
Then the rules layer permits them, and the question becomes how your use is judged. In an AI-assisted coding interview, a strong candidate shows judgment, checks the output and explains choices. For the wider skills behind that, see interview skills.
Common mistakes
- "A lockdown browser reads my answers and flags AI text." (wrong) The vendor describes controls on the device, not scoring. (right) "It restricts the device; scoring is a different system."
- "Lockdown browser is one product." (wrong) The name covers a browser, a camera layer and platform rules. (right) "I would first ask which layer the invitation describes."
- "It only blocks websites." (wrong) The vendor lists applications, virtual machines, remote desktops and the clipboard. (right) "It restricts the whole device during the test."
- "If a tool is not blocked, it is allowed." (wrong) The written rules decide, whatever the software does. (right) "I would check the rules, and ask in writing if they are unclear."
Follow-up questions
Does a lockdown browser grade my interview answers?
No source on this page says so. Respondus describes it as restricting the device, and the University of Alabama in Huntsville describes it as locking down the testing environment. Grading is done by whoever sets the test.
Do AI labs and big tech companies use a lockdown browser for interviews?
No public source found for this page shows AI labs or big tech companies using a lockdown browser for interviews, so treat it as unconfirmed. The vendor's customers are schools and universities. For how loops at one AI lab are structured, see how the Anthropic interview process works.
What if the rules do not mention notes?
Ask the recruiter in writing rather than assume. A device that blocks other applications does not tell you what the written rules allow, and the answer can differ between assessments. See whether you can look at notes during a video interview.
Can a lockdown browser detect ChatGPT or other AI?
No source on this page says it detects AI. The vendor's list describes blocking other applications, screen-sharing, virtual machines, remote desktops, the clipboard, printing and screen capture, which are controls on the device rather than checks on what is written. Detection of AI in hiring software at the resume stage is a different topic; see whether an applicant tracking system detects AI.
Does a lockdown browser record your screen or use your webcam?
The vendor says screen capture functions are disabled in the browser. Webcam and video recording belong to the companion application, Respondus Monitor, which the University of Alabama in Huntsville describes as using webcam and video technology. This page found no source that the browser alone uses the webcam; whether the monitor is switched on is set by whoever sets the test.
Can a lockdown browser detect a second monitor or a phone?
This page found no source on second monitors or phones. The vendor's list covers controls on the computer the browser runs on, so another device is outside it. Whether a camera layer or a rule covers such devices is stated in the instructions of the specific test, so read them or ask the recruiter in writing.
- A lockdown browser restricts the device an online test runs on; it does not score answers.
- The vendor lists blocked applications, screen-sharing, virtual machines, remote desktops, the clipboard, printing and screen capture.
- A webcam monitor is a separate layer that records the person.
- The platform's written rules decide what AI help is allowed, so read them or ask in writing.
- No public source found here shows an AI lab or big tech company using Respondus for interviews.
Sources
- LockDown Browser: how LockDown Browser works — Respondus, Inc., 8 Jul 2026
- What is Respondus LockDown Browser/Monitor? — University of Alabama in Huntsville (IT knowledge base), 26 Oct 2026
