In reality, the user is most likely viewing the display at a different angle than what the foil is expecting. The touch foil driver software is designed to take this difference into account by offsetting the foil’s tracking. When calibrating your touch foil, you are telling the driver software how to view the display and track touch input from the user’s perspective.


Sensitivity determines how reactive your PROFoil will become, and is primarily measured by a setting called the “threshold.” This simply determines how hard a user needs to press on a surface before the PROFoil recognizes it as input. The lower a touch foil’s threshold is, the less force it will take for users to register input. This becomes more important as the viewing surface becomes thicker. A thicker surface, such as dual pane glass, will not register input if the threshold is set too high.

Having a very low threshold is not necessarily the best option either. If a touch foil’s threshold is too low, you may see random points of input on the screen called “ghost touches.” These inputs are due to the threshold allowing too light a touch to count as input. If the viewing surface is relatively thin, you may need to set a higher threshold so the foil can easily tell when someone is intentionally using the display. Having a threshold that is too low or too high can severely hamper the user experience.

If you are having difficulty identifying the ideal touch sensitivity for your display, we are more than happy to provide consulting input at your request. Our technicians have worked with hundreds of different setups, and will be able to provide tips and tricks specific to your project.

Despite these two factors, the touch foil driver software’s simple calibration tool will allow you to quickly set your foil to the best possible settings! Visit our Support page on to download our helpful instructions for calibrating your foil, and for determining what version of the driver software you will need.