Banks do it all the time, when a critical action has been initiated by the user, the bank will reconfirm it is the owner of the account by sending a passcode or asking the user to re-enter their password.
Why do this? Because it might not be the same user in control of the session. It could be as simple as someone else sitting down at the desktop or something more nefarious like an attack that has stolen the session tokens.
Re-authentication protects the users from account attacks and the online service from “friendly” fraud such as chargebacks.
Why doesn’t every other online service do the same? Because normally it results in too much friction coupled with a high rate of failure. Most online services fear the negative impact it will have on their users.
Fortunately MIRACL trust’s action authentication takes 2 seconds and has a 99.9% success rate, meaning it will have a negligible effect on the user experience and your revenues!
What it does mean is that you can fight friendly fraud in the form of chargebacks with an effective tool to prove who really initiated a deposit/withdrawal, or prove who bet half their wallet on a long shot!
Just re-enter the same PIN you used to log in with.