[li2uR3ce]

Also SMS not nearly reliable enough. You should have alternatives for that reason alone. My cell carrier was blocking many SMS verification messages for a good two months. It caused me all kinds of problems when my credit union merged with another and I had to change account numbers all over the place. Many had the option of using an email address, but there were quite a few that it was SMS or play find the human on the 800 number.

[prirun]

Unrelated to Twitter, but your post reminded me that consumer should also have an independent "account number" for lack of a better word that belongs to the user, like a telephone number. Electronic payments would come out of this personal account number and be forwarded to whatever institution(s) the person wants. Then changing banks would be as easy as changing phone carriers.