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A password is something which only you should know. While using a debit card or credit card, you enter the password yourself and do not advertise this to the world.Viewed from this perspective, using a finger print as a login/ authentication tool can be the worst way to login.
The reason is simple... as long as you keep touching anything anywhere you are leaving your finger prints. Copying this finger print calls for low level skills.
Read the links below....
Your phone's biggest vulnerability is your fingerprint - The Verge
www.theverge.com/2016/5/2/.../iphone-samsung-fingerprint-duplicate-hack-security
May 2, 2016 - In five minutes, a single person faked a fingerprint and broke into my ... As hacks go, it ranks just a little harder than steaming open a letter.How to Fool a Fingerprint Security System As Easy As ABC - All
www.instructables.com/id/How-To-Fool-a-Fingerprint-Security-System-As-Easy-/
IBM never want you to know about,. it works for most of the fingerprint ... The scanner used in thishack stores only there special points of the user's fingerprintYour phone's fingerprint scanner can be hacked with a printer
mashable.com/2016/03/11/phones-fingerprint-hack/
Mar 11, 2016 - If you thought keeping your smartphone locked behind a fingerprint scanner would keep it secure, it may not be as stranger-proof as you thought.Your fingerprint sensor could be hacked with a single photo – BGR
bgr.com/2017/01/11/is-touch-id-safe-fingerprint-camera/
Jan 11, 2017 - Our fingerprints guard our digital lives more than ever before and, between Apple's Touch ID and the various fingerprint unlock features from ...Your smartphone fingerprint reader could be hacked using paper and ...
https://nakedsecurity.sophos.com/.../your-smartphone-fingerprint-reader-could-be-ha...
Mar 8, 2016 - Security researchers have tricked the fingerprint sensor on two smartphones with an inkjet printer, special silver conductive ink and paper.