The only buttons present on the Illumina are physical page turn keys on the left/right hand side of the screen, back button and the physical button that turns on the front-lit display. Icarus has an e-reading app that is integrated into the home screen and allows you to read PDF, FB2, EPUB, RTF, MOBI, TXT, HTM files. This is prompting Good e-Reader to test as many apps as possible and make a dedicated e-ink section on our app store.