Probably the similar to how Mint and inDinero works; they use a third party service (such as Yodlee) which provide aggregation of financial data. There was a t

Probably the similar to how Mint and inDinero works; they use a third party service (such as Yodlee) which provide aggregation of financial data. There was a thread about this: http://news.ycombinator.com/item?id=1537825 http://news.ycombinator.com/item?id=1537825