Electronic signature feature allows a user to input and view signatures in handwritten form. One or more signatures can be configured on item using API or list customization screen. To add a signature tab, first enable the signature tab (the same as comments or attachments). It's then possible to add a new or existing signature custom field. Signatures can be inputted only in TenForce mobile and can be viewed both in mobile and web using "signature icon" placed in the title row.

Limitations:
– It is not possible to add signature custom fields to an itembox.
– It is not possible to set signature value via API, however it's possible to get value which returns true if signature is filled in, otherwise false.