Well that's annoying, I used the keyword at the Nexus clap (because I was thinking if whistle was then perhaps clap, snap, hum, sing, yell, moan) could also possibly be ones So I tried each of them got the whole nope sorry must not be a keyword message...only For the story to tell me the clap is one so apparently even if you can guess or figure out a keyword until it's the time in the story that it's supposed to be used it does you no good... Which brings up the question why they didn't just simply make it were you tap the button and if a "key" has been learned You can just tap the one you want versus having to type it in. Also would it hurt to make some of the buttons bigger like the back button maybe? I found it's very hard to cycle back at least on an Android device because of how small the button is more times than on you end up moving forward You have to be very very careful very very precise and push very very slowly otherwise there's a chance that yes it'll go back once but it'll immediately jump forward because the button doesn't reload fast enough.