Privacy on an iPad: two-way filtering is usually the wrong choice

On a phone, the realistic risk is the person sitting immediately beside you. You hold it close, roughly upright, and the screen is small. A two-way filter that blocks left and right handles that.

An iPad is used flat on a desk, propped on a tray table, or held on a lap in a meeting. The person who can read it is far more often standing behind or leaning over you than sitting beside you — and the screen is large enough to read from considerably further away.

A two-way filter does nothing about that. It blocks left and right and leaves the vertical axis wide open, which is precisely the axis that matters here. On a tablet, four-way is usually the correct choice, and it is the opposite of what most privacy protector listings default to.

The strongest argument against a privacy filter is that it permanently costs brightness and viewing angle on a device you also use for video, photos and reading. On a phone you either accept that or go without.

Tablets have an option phones do not: removable magnetic privacy filters, which sit over the display and lift off in a second. They cost more than an adhesive filter and can be slightly less optically clean, but they change the decision entirely — privacy in the meeting, full brightness on the train home.

If your iPad is a work device that occasionally shows sensitive material rather than a dedicated privacy terminal, this is almost always the right format. Buy the removable one.

Orientation. Louvres run in one direction. A filter cut for portrait use behaves differently rotated to landscape, and many iPad users work in landscape. Check which orientation the filter is designed for — this is not a consideration on phones, which are overwhelmingly used upright.

Face ID and the front camera. On models with Face ID, confirm the filter does not sit over the TrueDepth array or degrade it. An adhesive filter that dims the camera's view can make unlocking unreliable in low light.

Apple Pencil. A privacy filter adds thickness between the tip and the digitiser, and the louvre structure can make the surface feel slightly different under the nib. If you draw on the device, test before committing — and see our paper-feel guide, which is a better fit for that use.