I've always wanted to make a messaging app that would vibrate in Morse code when you get a message. I love the idea of feeling a message in my pocket and 'reading' it without looking, but I'm also not great at deciphering it, so it wouldn't get much use.
Many years ago when I had an iphone I would set text vibrations to be the morse code of the first letter of someone's name so I knew who messaged me without looking. That's the only feature I still miss to this day with my android.
That would be fun. I think a lot of non-tech people didn't realise that the old Nokia default text message notification was the morse for S.M.S. (short message service). That was a worryingly long time ago though.
