# Read fingerprint doubt

**URL:** <https://forum.mautic.org/t/read-fingerprint-doubt/4379>\
**Category:** Product Support\
**Created:** [June 17, 2016, 4:11am UTC](https://forum.mautic.org/t/read-fingerprint-doubt/4379 "2016-06-17T04:11:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![francescjr](https://avatars.discourse-cdn.com/v4/letter/f/c5a1d2/32.png) [@francescjr](https://forum.mautic.org/u/francescjr)\
**Post date:** [June 17, 2016, 4:11am UTC](https://forum.mautic.org/t/read-fingerprint-doubt/4379/1 "2016-06-17T04:11:41Z")

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Hallo,  
  
  
  
Let’s see if you can guide me, I’m quite confused.  
  
  
  
I have my own website in which I am adding Mautic javascript tracking snippet.  
  
  
  
I have also some forms in my website, when the user submits this forms, some of the form’s fields should update Mautic contact information. I am using Mautic API for that, to update the Lead/contact.  
  
  
  
My issue is about identifying which lead to update:  
  
  
  
Is there anyway that I can get the fingerprint in my website, server side, so I could use this to search the Lead by fingerprint, so the proper lead will be updated?  
  
  
  
If not, I guess I will just have to push my website’s ID to Mautic Lead’s (even anonymous Leads). I don’t like this because I believe that managing this “my website ID” is to do exactly the same thing as implementing a fingerprint… I don’t want to do work that’s already done! (most probably done in a way better way that I can do)

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<div class="post-metadata">

**Author:** ![francescjr](https://avatars.discourse-cdn.com/v4/letter/f/c5a1d2/32.png) [@francescjr](https://forum.mautic.org/u/francescjr)\
**Post date:** [June 17, 2016, 4:11am UTC](https://forum.mautic.org/t/read-fingerprint-doubt/4379/2 "2016-06-17T04:11:41Z")

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Hallo,

Let’s see if you can guide me, I’m quite confused.

I have my own website in which I am adding Mautic javascript tracking snippet.

I have also some forms in my website, when the user submits this forms, some of the form’s fields should update Mautic contact information. I am using Mautic API for that, to update the Lead/contact.

My issue is about identifying which lead to update:

Is there anyway that I can get the fingerprint in my website, server side, so I could use this to search the Lead by fingerprint, so the proper lead will be updated?

If not, I guess I will just have to push my website’s ID to Mautic Lead’s (even anonymous Leads). I don’t like this because I believe that managing this “my website ID” is to do exactly the same thing as implementing a fingerprint… I don’t want to do work that’s already done! (most probably done in a way better way that I can do)