How it works in a data room
When fence view is switched on for a folder, documents open in the browser viewer with everything covered except a strip a few lines tall. The reader moves the mouse or scrolls to slide that strip down the page. Because only a fraction of the content is visible at any moment, a screenshot captures little, and a phone photo of the screen catches only a sliver. Administrators normally enable it per folder or per group, since it slows reading and is overkill for routine material. It is usually paired with screenshot protection and view-only rights.
Why it matters in a deal
Some documents are dangerous in anyone else’s hands even for a minute: a pricing model, a list of key customers and their margins, unpublished trial results. Fence view adds friction exactly where it is worth the inconvenience. It also signals to bidders that the seller treats the material seriously. The cost is usability, so reserve it for a short list of files rather than the whole room, and pair it with dynamic watermarking for traceability.
Example
A biotech company out-licensing a late-stage compound lets two pharmaceutical partners review its manufacturing process notes. The notes sit in a folder with fence view and view-only access, while the clinical summaries elsewhere in the room open normally. The partners’ reviewers grumble about the slow reading but accept it for twelve pages. The life sciences guide explains how partnering rooms are usually staged.