Signature lines in Word and Excel

A signature line resembles a typical signature placeholder that might appear in a printed document. However, it works differently. When a signature line is inserted into an Office file, the author can specify information about the intended signer, and instructions for the signer. When an electronic copy of the file is sent to the intended signer, this person sees the signature line and a notification that their signature is requested. The signer can:

• type a signature,
• select a signature digital image, or
• write a signature by using the inking feature of the Tablet PC.

When the signer adds a visible representation of a signature to the document, a digital signature is added at the same time to authenticate the signer's identity.

Important  A digitally-signed document becomes read-only to prevent modifications.

The following image shows the Message Bar alerting you to a signed document in read-only mode.

Reducing risk with digital signatures

Using signature lines in Office 2010 files makes it possible for organizations to reduce risk when you use electronic transactions and to streamline paper processes for contracts or other agreements. Digital signatures provide a record of exactly what was signed and can be verified in the future.

When the signer adds a visible signature to the document, a digital signature is added at the same time to authenticate identity. After a document is digitally signed, it becomes read-only to prevent modifications.