Setting approvers to authenticate themselves by password before approving a request-FIM 2010 R2

Hello,

Is it possible to have an approver in FIM 2010 R2 authenticate themselves before approving a request? Just to be sure that it is the right person approving a request and not anyone else. Like we have with password registration where the account name is recognized and the user is required to enter their password for validation before registration actually takes place.

Thanks.