This format allows the user to mark the task as completed by signing on it.
A window will open for the user to write his/her name (if the option has been enabled) and sign from any device.
In Format Settings you can indicate that only a specific user can sign for the task to be marked as completed.
When signing, the Undo button allows users to erase the last stroke made, while the Clear button allows them to start over and erase the entire signature.