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 differ from "Digital Signatures" where something is
cryptographically signed by the end user. Use of digital signatures
requires special software and requires that the end user have this
software and the capability to encrypt content. There is a significant
technical and conceptual barrier to the use of digital signatures with web
Better than a Checkbox!
Many web sites (including LuxSci.com) use a check box to signify
agreement. This is technically a legally binding action. However, use of
a checkbox is "weak", because:
- It is 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, paying with a
credit card, and you do not 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 form is submitted, 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.