Create a mandatory drawn signature box

[DeeDidliDee]

Hello All,

I have a form created in  Adobe Acrobat XI STD. This form is to be filled by an engineer using an iPad and getting the customer to sign the form onsite.

I need a drawn signature to complete the form. This needs to be mandatory.

I have had trouble doing this as the signature I can draw on the ipad does not insert into the box, it is a picture I then move on top of the box. This means the mandatory form feature doesn't work.

Ideally the engineer will click on the box, it pops up a signature box and once it is signed it scales down into the box. If the form is submitted without a signature an error appears that the signature is missing.

Any help on this?