1. A method for adjusting an inactivity timeout setting on a display device of a user, comprising: detecting an application that has operating system focus on the display device; capturing content displayed on the display device, the content comprising text; retrieving an operating system timeout value; monitoring user activity while using the application; storing the user activity as historical data; determining an inactivity timeout modifier by: calculating a readability score for the text using at least one readability formula, comparing the readability score to at least one predefined threshold value, and selecting the inactivity timeout modifier based on the comparison; storing the inactivity timeout modifier; and adjusting the inactivity timeout setting based on the inactivity timeout modifier.