To enhance personal authenticity (ensuring that the specified sender and the actual signer are the same), you can set an access code (password) when sending.
If you set an access code, be sure to inform the signer or viewer separately of the access code. (The access code will not be provided separately from the signing time.)
・The input rules for the access code are "up to 16 characters in half-width alphanumeric and symbols."
・The access code can be edited from the document's details page.
(You can also use it to restrict access to documents, such as in the case of a misdelivery.)
・Even if an access code is set, if you are logged in during the signing time, you will not be prompted to enter the access code.