A relationship between two people in which one person authorizes another, usually a family member or relative, to act for him or her in a manner which is a legally binding upon the person giving such authority as if he or she personally were to do the acts that is often limited in the kinds of powers that can be assigned. Unlike ordinary powers of attorney, durable powers can survive for long periods of time, and again, unlike standard powers of attorney, durable powers can continue after incompetency.