The best way to reduce blue light exposure is to minimize our screen addiction.  However, the internet and smart technologies are already so deeply integrated into our daily routines that it is pretty unlikely to change our habits.  Furthermore, people working on computers do not even have a choice.  Projectors, for example, provide an excellent option to reduce blue light exposure!  Even if you have to work on a computer daytime, you can relax in the evenings, watching your favorite show or serial on the projector screen.