To obtain proof of Key return to the agent there is a separate feature in Kaptur that will record signatures, this information once you have tapped on the 'Upload Signatures' button  from the same screen will automatically upload to a separate document to the Kaptur Management Suite library for that job.

From the Declaration screen there are three options at the bottom, the first one is Key Signatures.

Simply use your finger or stylus to enter your signatures and select Save Signatures, once you have or if you already are connected to WIFI tap 'Upload Signatures'. You can go back to this screen to upload at another time once connected.