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Story

I am developing an app that will be used from desktop and mobile browser (NodeJS, JS, HTML, CSS). I am also planning to wrap it with phonegap or react native to make it a downloadable/installable mobile app later.

Users can sign up with username and password. But the user account will be activated only after user's thumb fingerprint validation. This is to avoid duplicate/ghost accounts bring created.

Note

Fingerprints are not good passwords. So I am only planning to use them to activate account. After an account is activated users will login using usual username and password.

Queries

  1. How to get user's thumb fingerprint or a unique token that represents fingerprint in HTML, JS, CSS?
  2. Is there anything else that will stop duplicate/ghost account other than fingerprint?
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Ravi
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  • Here's a question with a similar problem: https://stackoverflow.com/questions/20359655/how-to-get-a-device-identifier-using-phonegap – chrki Jul 16 '17 at 18:42
  • No. That identifies unique device(or browser fingerprint). I want to identify unique person. A person can own many devices. – Ravi Jul 16 '17 at 18:47

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