Mr. Joseph teaches computer science and also looks after the school's lab. A student calls out that her program has stopped working. Walking across the room is easy, but Mr. Joseph is helping three other students at the same time, and he wants to see her screen before deciding whether the problem is quick or serious.
He opens her lab PC from his own laptop using DeskVNC and switches on view-only mode. In this mode he can watch everything happening on her screen, but his mouse and keyboard do nothing there. That matters in a classroom. A stray click from the teacher's side could close her file, and the student would lose the habit of fixing her own mistakes.
He sees the error message, notices that she has saved the file in the wrong folder and tells her what to check. She fixes it herself. If the problem had been bigger, he could have turned view-only off and taken control or walked over with a clear idea of what to expect.
View-only is also useful for demonstrations. Mr. Joseph can keep one student's screen visible during a lesson without any risk of changing it.
Key takeaways
• View-only mode lets you watch a remote screen without any chance of changing it.
• It is ideal for teaching, because students stay in charge of their own work.
• You can switch to full control only when it is really needed.
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