Can you block pre-filled values from being edited in forms 2.0?

[Alexis_D_Alba1]

I've created a form in Forms 2.0 and enabled the form pre-fill function. 

I was wondering if there is  a way to block a person from editing the prefilled values once they populate. 

For example, I want an existing  lead's email address to populate, but I do not want them to have
the ability to edit this information in this particular form.

Does anyone know if this is a possilbily?

Thanks!
Alexis

[Anonymous]

Hi Alexis,
you can block Updates for fields in the Lead Databse. I think doing it in the form would just be possible using JavaScript.

Best regards

Steffen

[Matt_Stone2]

Out of curiosity, why would you want to disallow them the ability to update their information? And likewise, if you don't want them to change it, why display it again if it's already filled out?