Was it a BTC wallet isn't (as we know) - so he is perhaps Dogecoin holder that is why he was angry that it wasn't Dogecoin wallet :-)
And you know what - I really love idea of whrist crypto wallets.
Remarkable.
+100 for idea.
Continue with your project and when it will work as ex. Trezor but on a wrist I will buy it.
And this is possible to complete. You just need crowdfounding and/or a sponsor and few workers.
If you will think about this deeper it might be huge IMO.
Make prototype. And perhaps you just invited first btc wrist wallet on earth..
Congratz :-)