filled. >> reporter: the equipment will assemble and mix medicine, which assures the products are just right and limits human exposure to these dangerous medications. through a bar coding system, the hospital will be able to track all these drugs from the time they're manufactured until the time they're administered. no matter what safeguards are put in place, human beings are always going to make mistakes. according to the institute of medicine, there's at least one medication error per day involving patients in hospitals across america. systems like this are designed precisely to eliminate those problems. this system, for instance, would likely have prevented the medical mistake involving the twins of actor dennis quaid. in that mixup, hospital staff in los angeles gave quaid's twins