A Signature is an image control that allows you to collect electronic signatures from your users. And it's applicable for Forms Only.
It's logically associated in your customized form. When a signature entry is submitted, the signature appears with your entry information as an image.
Label & Binding
The label will display as the title of this field. You can define the name for this field. You also can switch off "Display Title" to hide the label on the form.
Binding is only applicable for form builder. A signature field can be reset to bind with any other image controls on this form.
Define the appearance of this field to change the styles.
Dynamic Display Rules
When you set a dynamic display rule for this field, It behaves differently based on specific conditions and rules. There are four actions(Hide/Show/Read-only/Editable) for signature controls.
You can enable/disable comments on this field after the form is submitted. There are two options to trigger comments entering: On Click and Mouse Hover.
For a bound control, the comment key will be auto-bound with this control/field.
Validation will verify that the data users enter in this form meets the standards you specify before the form can be submitted.
Set this field as read-only to create variable form pages of your workflow(or application versions) . All bound controls (fields) can be made read-only, with the exception of fields that are already read-only by default. E.g. Calculation.
Required field will make sure the user provides a response. When a field is required, an error message will display under this field and at right top of the form. The form cannot be submitted until a value has been added to the field.
Required fields are indicated by a red asterisk next to the label. By default, fields are never required.
Note: Only a required field in visible of this form will trigger the validation action.
You can set a custom error message that will display under your field when specified conditions become true. It will allow you to add any number of rules for validating your field.
Learn more about the Custom Validation.
Event Rules (only applicable for Forms)
Event rules allow you to set actions that should be taken on events that meet your designated rule criteria. You can create event rules to execute any number of actions based on this field.