Ink Signatures enable you to capture the hand written signatures
of your web form users and to save these with their form submissions.
What Do Ink Signatures Look Like?
Picture of part of a sample Web form that includes an Ink Signature.
Why use Ink Signatures?
Easier than digital Signatures!
Ink Signatures differs from digital signatures since the end user signs
something cryptographically. Use of digital signatures requires special
software and requires that the end user have this software and the
capability to encrypt content. There's a significant technical and
conceptual barrier to the use of digital signatures with website forms.
Better than a checkbox!
Many websites (including LuxSci.com) use a checkbox to signify
agreement. This is technically a legally binding action. However, use of
a checkbox is weak, because:
- It's hard or impossible to prove exactly who checked the box
- The checking of a box can technically be forged
For these and other reasons, using a checkbox as a digital signature,
while simple, is not recommended in places where you need stronger proof
Case in Point: If someone buys something from you and pays with a
credit card, and you don't have a written signature from them authorizing
this, then you have no defense if they "charge back" the money. With
their written signature, you can prove who ordered it and stop the charge
User-friendly and familiar!
An Ink Signature is a box you can put in your Web form
where your user can sign his/her name by:
- Drawing it with a mouse
- Drawing it with a stylus and a drawing pad
- Drawing it with a finger or stylus on an iPad, iPhone, or
When the writer submits the form, you get this signature as a digital
Mobile devices: Users sign by drawing their signature using a stylus or their finger.
Desktop/Laptop devices: Users sign by drawing with the mouse (click and drag to draw) or
by using a stylus and drawing pad.
do not work in PDF forms.