Q: For an upcoming project we are interested in using PDFNet Mobile SDK (http://www.pdftron.com/pdfnet/mobile/android_pdf_library.html). However, we had a few questions about whether PDFNet SDK for Android/iOS can be used to “sign” PDF documents on an Android Tablet. Is it possible to do freehand drawings (or annotations) in a PDF with PDFNet Mobile SDK for Android?
Yes, freehand drawing is supported out of box. If you download our SDK (http://www.pdftron.com/pdfnet/mobile/request_trial.html), you will be able to use/test this feature with the provided sample app.
If required, you can also integrate PDFNet with third party (or your own) digital signature frameworks and workflows.