I keep all my purchased software details in the system. My passwords for all logins are secure. It is the same for bank info. Also, if I wish to add a comment field to my bank info, I just add a field and call it, for instance, "Comment". It's really that simple.
When I started to keep my Bank Information I needed some security for Password fields. Initially I used AES 256 bit encryption which is very secure. Banks typically use AES 128. Both are very secure but the recent advances in computer hardware started to shorten the secure life span, so RSA 2048 bit encryption was chosen to encrypt all Passwords and sensitive information. See this link about breaking RSA 2048. My feeling is that RSA 2048 is secure for quite a while yet and will provide enough time to develop something even better.
I am good at what I do, and fortunately I love what I do. It does not ever feel like work. The same KISS principles that were used to make an 8 MB Wireless Router are applied to the MyWisp program. Imagine having an encrypted, customizable database, with a real Spreadsheet and able to show results on a Map in around 15 MB of code. Ever wonder why a simple program is 300 to 400 MB? Thinking about that can make you crazy.