The thesis deals with solutions for the blind and deaf on mobile devices. We will review the current state of how smart phones can help the blind and deaf people in everyday tasks. First, we will review how accessibility is taken care of at the OS level with integrated programs. We will focus on Android and iOS operating systems. Then we will review the applications that are available on Apple and Android smart phones. We will present guidelines for designing interfaces that take accessibility into account - based on these guidelines, we will analyze the example of the mobile interface of the Facebook application and point out errors and suggest corrections. Finally, we will present some more innovative solutions.
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