How to encourage the user to check details before submission

I'm upgrading a legacy financial application which requires users to re-enter their password before a transaction is submitted. I need to remove the password check since I'm migrating users to a new Identity Provider where this is no longer possible.

The advice from our business area is that the password check 'slows' the user down and forces them to think about the transaction details, avoids users accidentally clicking a submit button etc.

What is a common approach to encourage users to check details on page before continuing? captcha? secret question? email a PIN? forced time delay?