What are your thoughts about this issue in regards to an e-commerce environment?
Do you think it is wise to turn autocomplete off on all sensitive input fields such
I actually don't think i've ever seen "autocomplete" work on a password field.
Autocomplete(when you start typing something in a form field, and the browser popups up a list of suggestions), and asking the browser to remember your user name and password are two different things.
If you're talking about the browser feature that remembers your username and password, i'm not aware of a way for you to disable that on the user's machine.