This has been done in Norway for some time (Score 2, Informative)

A Norwegian bank called sparebanken-hedmark (www.sparebanken-hedmark.no) has done this for about a year. They were also one of the first Norwegian banks who started with online banking. Thats actually quite funny since they are a regional bank in a region perceived as slow when it comes to development. I also see that there has been some comments on security, and the Norwegian bank is working closely with a Norwegian college and their programme of master study to ensure the security. Good to see that the big banks are following in an inevitable trend.