In order to sign a PDF document within the {{UBIK}} application use the [[Adobe Reader]] for your particular mobile device. Once this application is installed any PDF document opened from within the {{UBIK}} appplication can be edited and signed as shown in the following video (signing starts around 2:30): [http://tv.adobe.com/watch/acrobat-x-tips-tricks/adobe-reader-mobile-comments-and-esignatures/ Editing and signing PDF documents](signing starts around 2:20 min)
{{Hint|The modified PDF document will overwrite the original document, having the signature as additional content.}}