Latoya,
It has been a while since I looked at the most up to date technology regarding login credentials. In my experience, the best methods that I have personally used were the CAC (Common Access Card) that I used while on active duty, and SSO that I use currently. I like my current organizations single sign on method because we have regularly changing passwords that require us to make a new password each time. Both methods have been good due to nobody being able to login to any of my information without my CAC card, and those who don’t have my exact password are unable to access any of my data for my SSO.
-Jacob