Re: Web App With Signature

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Thanks Steven,

Would questions regarding the details of the ActiveX, would be better posted
in a windowsforms group?
--

AG
Email: npATadhdataDOTcom


""Steven Cheng"" <stcheng@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:bUr%23T3PKJHA.1656@xxxxxxxxxxxxxxxxxxxxxxxxx
Thanks for your reply AG,

Seems I missed the "stylus" part. I agree with you that cert if not
necessary if the signature is just to capture a image version of thet form
the user fill in browser. And I do think ActiveX is the reasonable
approach here.

As you said that "you need a way to capture the signature on the web
form",
I think one approach is let the activeX control do the following task:

1. You can put the form in the activeX control(instead of the web html
page) , then the activex control can use some windows print API(print
message) to capture the screen of the activex control window.

2. If you do not put the form in ActiveX control, but leave it in html
page
markup. You may need to capture the screen of the entire browser window.

#How To Copy the Screen or Active Window to the Clipboard from Visual
Basic
http://support.microsoft.com/kb/240653

For the validation part, I'm not sure whether the stylus generated
signature has some particular format that can be validated? Otherwise,
image format data is really quite difficult to validate.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


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--------------------
Reply-To: "AG" <NOSPAMagiamb@xxxxxxxxxxxxxxxx>
From: "AG" <NOSPAMagiamb@xxxxxxxxxxxxxxxx>
References: <ei6eXA7JJHA.5060@xxxxxxxxxxxxxxxxxxxx>
<zmPCK$CKJHA.6004@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Web App With Signature
Date: Tue, 7 Oct 2008 08:30:27 -0400


Steven,

Maybe I am missing something, but I don't see where I would need a digital
signing cert.
The app would run under https, so a server cert will be necessary.
The 'signing' is to be done using a stylus. The idea is to replace paper
forms.
Instead of a paper form, a patient would be handed a tablet pc with the
'form' on screen in a browser.
Patient would fill out the info and actually sign using a stylus.
I need a way to capture the signature on the web form and validate that it
is not left empty.
Although I am open to suggestion, I thought that the best way to insure
nothing changes after signing, would be to somehow create an image of the
completed form with signature and store that, in addition to storing the
form data in a database.
Since the app is not for general public use, requiring an ACTEVEX is
acceptable.
The main question is how to go about collecting and validating the
signature?

--

AG



.

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