How do you know that screenshot came from the student's own machine?
Remote labs make assessment easy to run and easy to fake. A little bit of signing goes a long way toward trusting what you are marking.
Ask a class to submit a screenshot of their work and you will get back a folder of images that all look plausible. Some are genuine. Some are a classmate's screen. Some are lifted from a walkthrough online. For a practical unit, that uncertainty quietly undermines the whole assessment.
Stamp the work with who did it
StudentLabs can mark each student's machine with their identity: a small banner that stays on screen and a wallpaper stamp showing their name, the lab, the machine and the date. When a student captures their screen, that identity is captured with it. A screenshot that belongs to someone else is immediately obvious.
Verify it, do not just trust it
The stronger half is a signed check. Each machine can produce a short, signed attestation that ties a piece of work back to that specific student's machine at that specific time. You paste it into a verify box and get a clear answer: genuine, or not from where it claims.
Integrity tools should make honest students' lives easier, not harder. The banner is passive, the verification is one paste, and neither gets in the way of actually doing the work.
None of this turns a teaching lab into a surveillance exercise. It simply means that when you sit down to mark, you can trust that the evidence in front of you came from the person whose name is on it.