[Last updated October 17, 2019]
On occasion, you may need to add a signature question into your smart form. You can easily add signature questions from Survey123 Designer and Survey123 Connect and use them from the Survey123 field and web apps. Signatures are stored as image attachments in ArcGIS, so you can later display them in other applications or your own Feature Reports.
Adding a signature question from the Survey123 designer
Drag and drop...
Adding a signature question from Survey123 Connect
You can turn an image question into a signature pad using the signature appearance, as shown in the XLSForm below. Optionally, you can control the size of the signature question by using the body::esri:style column. The units for the height are by default expressed in lines, but you can also use a percentage of the screen.