Your Phone as a Second Camera: What It Sees

If an exam or assessment invitation tells you to set up your phone as a second camera, you are adding a lens that films you, your hands, your desk, and — on some platforms — your screen, for the entire session. The setup takes five minutes. The rules are the part worth reading, because the major proctoring vendors do not agree on what that camera is supposed to capture. On ProctorU, your computer screen must be in the second camera's frame. On the LSAT's remote option, your screen must not be. On Pearson VUE's OnVUE, the phone is banned from the desk entirely once check-in ends. A candidate who learned the setup on one platform will get it wrong on another, and getting it wrong is a rule violation in either direction.

Every rule below comes from the vendor's or test sponsor's own published policy, read on 23 September 2026. The program you are testing under is the one that governs you.

The requirement is newer than it looks, and it is arriving by default

Second-camera proctoring stopped being a premium add-on in late 2025. Kryterion announced in a post dated 9 October 2025 that "Dual Camera Proctoring is a no-cost feature available to every test sponsor who uses Webassessor®," describing it as a "free, high-value feature for all Webassessor® clients" that gives sponsors "a 360° view of the testing environment" (Kryterion, dual camera proctoring). When a security feature costs the test sponsor nothing, the decision to enable it stops being a budget question.

Two sponsors then made it mandatory on dated schedules. NCARB, which administers the Architect Registration Examination, told candidates that as of 1 June 2026 "all candidates will be required to use a mobile device as a secondary camera," positioned roughly two to four feet away on a stand, capturing the entire computer screen, the full keyboard and mouse or trackpad, both hands while typing, and the candidate's side profile. The same change ended Mac and Linux delivery: after that date, "Mac and Linux devices will no longer be accepted" for online proctored testing (NCARB, upcoming change to online proctoring requirements, posted 13 April 2026 and updated 26 May 2026). LSAC followed for the multiple-choice section of the LSAT: "Starting with the August 2026 LSAT, if you are granted a Remote Testing Exception … you will be required to use your smartphone as a second camera" (LSAC second camera policy).

Technical hiring is not exempt. Mercer Mettl, which delivers employer coding and aptitude assessments, documents dual camera proctoring in which "the test taker would use mobile camera to scan QR code from desktop screen," grants camera and microphone permission, and then must "place mobile device 3 meter (10 feet) away" (Mettl mobile pairing guide). Talview markets the same shape to its customers as a way to "use candidate mobile phone as secondary camera" for a "wider view of candidate surrounds," claiming detection of "multiple individuals within a room during an online exam" (Talview secondary camera proctoring) — a vendor claim, not an independently verified detection rate. What each platform records through the primary webcam is a separate question, covered in what a Mettl session captures through your camera.

The rule they disagree on: is your screen supposed to be in frame

This is the detail that decides whether your setup is compliant, and it is the detail that varies most.

ProctorU instructs candidates to "elevate and position your camera to include a view of your workspace, yourself, and a view of your computer screen," and its checklist specifies landscape orientation, a distance of "2' to 3' (0.7-1.0 meters)," and a frame showing "your profile with your hands and face visible" (ProctorU, second camera: what to expect; second camera checklist).

LSAC requires the opposite. Its instructions place the phone "about two arms lengths away to capture your desk surface and surroundings," positioned "to the side of your testing area to capture a wide view of your workspace, making sure your computer screen is not visible." The stated scope is narrow: the requirement covers the multiple-choice section, while "LSAT Argumentative Writing will continue to be administered online with a single camera."

Pearson VUE sits outside the trend entirely. Its OnVUE candidate technical requirements, version 26.7.1 dated July 2026, state that "mobile phones cannot be used as a webcam for exam delivery," allow the phone only for check-in, and then instruct candidates to "place the phone out of reach and out of view for the rest of the exam" (OnVUE technical requirements). Since AWS, Microsoft and CompTIA certifications are delivered through OnVUE, a large share of technical certification candidates will never see a second camera — and the other integrity layer that applies to them, post-hoc statistical review of answer data, is the one covered in what a remote-proctored certification exam records and can revoke later.

The practical consequence: read the setup page for the specific exam you are sitting, on the day, rather than reusing a setup that worked somewhere else.

What a side lens adds that telemetry cannot produce

Browser and desktop telemetry infers. It reports focus changes, paste events, keystroke timing, and monitor counts, and each of those signals has a benign explanation that a reviewer has to rule out. A camera aimed at your desk from the side does not infer. It records what is on the desk.

That distinction matters most for the things assessment telemetry has always been weakest at. A second monitor placed outside the primary webcam's cone is, from the software's point of view, an inference problem — the limits of that inference are worked through in what a coding interview can and cannot establish about a second monitor. From a side camera required to include your screen, your keyboard and both hands, it is simply visible. The same is true of a phone in your lap, a printed sheet, a tablet, or another person in the room.

It is worth being precise about what this is not. A second camera is a recording, not a detector. Someone still has to watch it, live or after the fact, and the flag rate, review depth and escalation path vary by sponsor and are rarely published. The improvised version of this — an interviewer on a live call asking you to pan your webcam or wave a hand — is a different and weaker instrument, and we sorted those checks by what each one actually tests in why interviewers ask you to wave your hand.

The failure mode nobody puts in the invitation email

The second camera is a second point of failure, and at least one vendor is explicit about the cost. ProctorU's checklist states: "If your second camera device is disconnected during the exam and you are unable to reconnect, your exam may be terminated." Everything that can drop a phone off a network or out of a browser session for thirty seconds is now in scope for your exam result — an incoming call, a low-battery shutdown, a Wi-Fi handover, an OS update prompt, a screen-lock timeout.

That is why the setup instructions read like a checklist rather than advice. ProctorU asks for a charger within reach and notes that "your mobile device's camera usage will drain its battery," requires the device on Do Not Disturb, and asks that the second device be on the same Wi-Fi network. LSAC asks for the phone in landscape on a tripod or stable surface and plugged into an outlet. Treat every one of those items as a scored requirement, because functionally it is.

One more constraint follows from the same rules. If your phone is the second camera, or is required to be out of reach, then any workflow that depends on picking up your phone during the session is unavailable. Control is a desktop-native assistant for Windows and macOS whose feature list includes a phone remote for controlling it without touching the interview computer (Control); under a second-camera rule, that particular path is closed, and on a sponsor like NCARB that also dropped macOS delivery, the machine question is settled before the software one. Screen-capture behavior is a separate axis from a physical lens pointed at the screen, and no desktop application changes what a camera two feet away records.

Before the session, not during it

• Open the sponsor's own second-camera page for your specific exam and confirm whether your screen belongs in frame. Do not generalize from another exam.
• Check the delivery platform's OS support before you pick a machine. NCARB's June 2026 change made Windows the only accepted option for its online proctored delivery.
• Set the phone up the day before, on a stand, in landscape, plugged in, on Do Not Disturb, on the same network. Take a photo of the framing so you can rebuild it quickly.
• Clear the desk to the sponsor's stated rule rather than to your own judgment of what looks fine.
• Know the reconnection path. If the second camera drops, the difference between a pause and a terminated session is often how fast you get it back.

The decision this leaves you

Second-camera proctoring is spreading because it is now free to enable, and it is arriving without a common standard: three sponsors, three different answers to whether your screen should be visible, and a fourth platform that forbids the phone outright. There is no general knowledge to carry between exams here, only the specific page for the specific exam.

If your exam runs on OnVUE and you are preparing for an AWS, Microsoft or CompTIA credential, the second camera is not your problem — the post-exam forensic layer is, and what certification proctoring records and can revoke months later is the more useful place to spend your preparation time.