I&#x27;m guessing you downvoted me because you disagree with my point of view. I&#x27;ll just tell you this: I have been thinking a lot about the stuff you talk about here and even prototyped a hardware device to try out the idea. I had the same point of view (It would be nice to have an input device I can use without even looking) but after experimenting I realized this isn&#x27;t the case.<p>Also this &quot;vibration&quot; thing you&#x27;re talking about--it&#x27;s obvious you haven&#x27;t thought deeply about this because if you took at least a couple of hours thinking more about how this would work you would realize vibration itself has nothing to do with this&quot;. I have had a phone that gave you nice tactile feedback using vibration (Prada phone), and while it does feel nice, it doesn&#x27;t do anything in terms of letting me know my input was correct.<p>Anyway this all doesn&#x27;t mean anything if you don&#x27;t really believe me. So let me ask you a rhetorical question: Do you think you will be able to type into a blackberry absolutely without looking at the keyboard? Also, when exactly would you be typing while NOT looking at a <i>mobile</i> screen? Even on a blackberry people have to look at the screen to make sure they didn&#x27;t mistype something (Even with all that tactile feedback). On a desktop computer typing without looking makes sense because that&#x27;s the mode in which people use the device (whereas on a mobile phone the screen and the keyboard are attached so looking at the screen means also looking at the keyboard)<p>Anyway if you really believe in these ideas, you should at least try an MVP or any simple experiment (or maybe even some thought experiment) before being so sure about it.