Android Voice Guidance

*) This application mainly concentrated for visually impaired people. *) It should operate based on a Physical Button. *) User Inputs and application responses should be completely over voice interaction. *) GUI is not needed. *) It should have the following three features : *) User defined Location Markers. *) Direction guidance. *) Track User path. (Detailed description of each feature is explained below) *) After a single press of the physical button, User should be able to give an Independent voice command to activate any one of these three features. *) Also everytime the button is pressed, application should inform about his current location, before activating a feature. *) User should be able to request for help on how to use a feature and list of voice commands in it. *) User should be able to stop a feature any time. User Defined Location Markers : *) Once this feature is activated through its voice command, the application should interact with the user over voice. *) It should ask the user to specify a Name/Keyword(s) to mark his current location. *) Once the application gets its input, it should verify and confirm with user about the same. *) If User feels that input has taken properly, he should confirm it and then give a command to save it. Else, he should ask the application to get the input once again. *) In the same way user shoud be able to define any number of his own markers at any time. *) User should be able to check the list of his markers any time needed. *) He should also be able to edit any of the marker if needed.