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Viewing digitally signed PDF

3950 Views 5 Replies Latest reply: Mar 20, 2013 7:09 AM by vslavik RSS
Hook66 Calculating status...
Currently Being Moderated
Jul 20, 2010 11:45 PM

Here's a sample of a digitally signed PDF :

Viewing it with Acrobat Reader on a Mac shows it's signed by John B Harris, with a picture of his manual signature on the left, and the digital signature info on the right.

But on the iPad, the content of the PDF stays simply blank.

Is there any viewer on the iPad that can visualize such digital signatures ?
(it would be very nice if you can check with the one you use yourself)

Do you think Apple intends to add the functionnality to iOS in the future ? (it's not working on the iPhone with iOS 4 either)
Windows XP
  • Dan White Level 6 Level 6 (9,420 points)
    Currently Being Moderated
    Jul 23, 2010 4:54 PM (in response to Hook66)
    Did you try iBooks ? It does PDF's now.
    Primary Machine: Intel iMac (I have others), Mac OS X (10.5.8)
  • msschreiner Calculating status...
    Currently Being Moderated
    Aug 10, 2010 12:09 PM (in response to Hook66)
    The same problem happens when opening an Adobe Acrobat digitally signed document in Preview. Preview doesn't display the signature. This is a major issue.
    iMac 2.66 GHz Intel Core i5, Mac OS X (10.6.4)
  • Eric Barger Level 1 Level 1 (15 points)
    Currently Being Moderated
    Nov 6, 2010 8:45 PM (in response to msschreiner)
    Yes, this is now an issue for me. I now have to start digitally signing PDF files and it seems Acrobat is the only solution on the Mac and I have yet to find one even to just view a sig on the iPad. I really don't want to purchase Acrobat just for that feature but it looks like I may have too.
  • vslavik Calculating status...
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    Mar 20, 2013 7:09 AM (in response to Eric Barger)

    If you'll pardon my shameless plug, I may be of some assistance: I got tired of waiting for some usable signing solution, so I wrote my own and it's available in the Mac App Store now: (you'll note it doesn't do visual signatures yet, only the cryptographic ones, but they'll be supported in a future update).


    “I may receive some form of compensation, financial or otherwise, from my recommendation or link.  <Edited by Host>”


    On the iOS side, check out the "Sign Master" app; I didn't use it myself, so I don't know how good it is, but well, at least it exists.


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