Autocue -

A monitor below the glass displays the text in reverse (mirror image).

Modern Autocue systems use a beam-splitter glass—a sheet of glass that is reflective on one side and transparent on the other—set at a 45-degree angle in front of a camera lens. autocue

Systems range from large studio rigs to portable "Presidential" podium prompts and mobile-based setups for smartphones or tablets. Best Practices for Presenters A monitor below the glass displays the text

Because the glass is transparent from the back, the camera captures the presenter without seeing the reflected text. Operational Roles and Technology autocue