Sadly, no forensic detective work or disembodied fingers needed to bypass the fingerprint technology built into most "smart" phones:

https://www.theverge.com/2016/5/2/11...-hack-security

https://www.youtube.com/watch?v=2u4ZLGsw1zo

https://www.macrumors.com/2014/09/24...gerprint-hack/

There's tons more...(Google is your friend )