Startup Idea: Consolidated Financial Accounts App

Startup idea to create an application that consolidates all financial accounts in one location. The app should include checking accounts, credit card information, and others, secured by a unique verification code or key.

I would like to pull all my financial accounts together in one app. All my checking accounts ect I have many different accounts, It would be great if even my credit cards were there as well. I understand financial institutions are secure but maby if there was some kind of special key or code to verify and get the accounts in the app.