A few years back, a family member was receiving out-patient treatment for a very grave illness. The system of administering injections involved two nurses. One would prepare the injections. Then a second nurse would come in and verify that what had been prepared matched what was on the computer as what the doctor had ordered. The system seemed a a pretty reasonable way of making sure that the patient didn’t get the wrong thing.
When I was hospitalized earlier this year, every thing they added into my IV, every pill they gave me was double checked on their portable computer.