First I want to say that I'm german so sorry if my english is incorrect at some point. I want to write a java program for mac (My first "real" program so far) which can read in a keyword or something you say and recognize your voice kind of like a code. I want that program to open right after the mac turns on or in lock screen so you can only enter if you verify. So my problem is, I have no idea how to compare the voices. I have read the questions to that topic but that is not really what I want. Also I have no Idea how to let it pop up right when the mac turns on but that is another problem I'll deal with later :D
Hope you understand my question and thanks for any help :)
To compare voices you can start from How to compare 2 voice in Android or from iSpeech. Another point from you can start is rivr.