I have a website that I have been trying my best to keep it running well, recently testing it myself I realised how annoying is to have to type your password again when you have already logged in and you need to buy something else.
So What I basically thought to do is to hide the password fields from the check out page without messing with my currently jQuery Validation on the page.
Some help is much appreciated.
You can do this with jquery/js but you will need to work the default bc validation script. Tutorials
Or if you have liquid enable you can detect the logged in with globals.user.isLoggedIn and hide/show the password field as needed.
Bu in both casses you will need to work the default validation js.
Hope it helps.