Canvas Can Log a Tab Switch. That Isn’t the Same as Seeing Your Other Tab.

Yes—during a quiz, Canvas can record that you left the quiz-taking page. But a quiz log is not the same as seeing which unrelated tab you opened, what you read there, or whether you cheated.

Instructure, the company behind Canvas, documents a “Stopped viewing the Canvas quiz-taking page” entry for Classic Quizzes. It can appear when a student opens another tab, closes the quiz tab, or moves to another program. A “Resumed” entry records the return. These are timestamped quiz events, not a recording of the other tab. Instructure’s quiz-log guide also explicitly warns that quiz logs should not be used to identify cheating.

The useful distinction is between detecting that the quiz page is no longer active, observing activity inside Canvas, and recording your screen. Those are different capabilities.

What an instructor can see in quiz logs

In Classic Quizzes, the documented log includes the attempt’s start time, question-view and answer events, and stopped-viewing/resumed events. Quiz Log Auditing is a course opt-in feature, so availability depends on the course configuration. Instructors access it through the student’s quiz results and View Log. The guide describes a log they inspect; it does not establish that every tab switch sends your professor an automatic alert. Classic Quizzes documentation

New Quizzes also has attempt logs. Its Moderate page lets instructors review start and completion times, elapsed time, event details, answers, and moments of stopping and resuming the quiz. Don’t assume the Classic Quizzes wording and opt-in setting apply identically to New Quizzes. New Quizzes documentation

There is another distinction worth knowing: New Quizzes has a Detect Multiple Sessions setting. When enabled, it records access to the quiz from multiple browsers or devices. Instructure says those multi-session details are available to administrators, not instructors, and can include session IDs, IP addresses, browsers, and operating systems. That detects additional quiz sessions, not arbitrary browsing in unrelated tabs. Administrator guide

How can a page notice a tab switch without reading the other tab?

Browsers expose signals about a page’s own state. For example, the Page Visibility API tells a website when its document becomes visible or hidden. Focus and blur events can indicate whether its window is active, although losing focus does not necessarily mean the page is hidden. These browser capabilities explain how a website can notice that you moved away without having a view of your destination; they do not establish exactly which signals each Canvas quiz engine uses. MDN’s browser documentation

Reading another website is a separate capability. The browser’s same-origin policy generally prevents an ordinary Canvas webpage from reading the contents of an unrelated site open in another tab. A focus-change signal does not grant that access. MDN’s same-origin policy explanation

Nor does “not taking a quiz” mean “no Canvas records.” Canvas has separate page-view records for activity within Canvas, including accessed URLs, dates, and interaction information, subject to account permissions. That is not a browser-wide history or screen recording. Instructure also warns that these records are best-effort data, not guaranteed to be complete or entirely accurate, and are not intended for high-stakes analysis of individual users. Instructure’s page-view guide

Why “stopped viewing” is not proof of cheating

The log describes an event, not its purpose. Leaving the quiz page could mean consulting prohibited material—but it could also mean dealing with a technical problem or using an approved tool.

Chico State’s support guidance lists legitimate possible triggers, including operating-system notifications, volume adjustments, assistive-technology pop-ups, accidental clicks, and troubleshooting. It warns against treating the event alone as definitive evidence of academic dishonesty. These are possible explanations, not a guarantee that every notification produces a log entry. Chico State guidance

Instructure gives the same central warning in both its Classic and New Quizzes guides: quiz logs should not be used to validate academic integrity or identify cheating. A timestamp cannot establish what someone looked at or why.

Proctoring changes the answer

A quiz running in your normal browser is not equivalent to one requiring additional exam software.

According to Respondus, LockDown Browser restricts the testing environment: assessments cannot be minimized, access to other applications is prevented, and task switching is disabled. That is an attempt to prevent switching, rather than merely log it. Respondus’s feature description

Respondus Monitor adds proctoring capabilities. Its screen-recording option can be enabled per exam when both LockDown Browser and Monitor are used, producing video instructors can review. Respondus lists support for Windows, Mac, and Chromebook, but not iPad. Screen recording therefore can expose on-screen content that a plain quiz log cannot. It is a separate exam configuration, not an automatic feature of every Canvas quiz. Respondus’s screen-recording documentation

Before an assessment, check its instructions for permitted resources and required software. Ask whether opening digital notes or using assistive technology is allowed, and resolve accommodations in advance. If a technical interruption occurs, note the time and report it promptly. If a log entry is questioned later, ask which event and timestamp are at issue and provide the relevant context: the log alone cannot supply it.