The 8 articles demonstrate that bar code scanning during medication administration can significantly reduce medication errors and improve patient safety. Studies found error rates reduced by 50-95% with bar code scanning, preventing dangerous mistakes like wrong drug, dose, patient, or route. Hospitals that implemented bar code scanning saw declines in adverse drug events and other safety issues. However, some articles note that scanning will not catch all errors and that human factors like workload and distractions must also be addressed. The research establishes bar code scanning as an effective technological solution to promote safer medication practices in healthcare facilities.