XPS Signer allows you to sign XPS documents without any need to purchase additional software. This dramatically reduces the Total Cost of Ownership (TCO).
Configurable Signature Behaviour - XPS Signer provides a fully configurable behaviour for its digital signatures.
Interoperability - Signatures produced with XPS Signer can be verified using standard XPS Viewer.
PKI Interoperability - XPS Signer is completely PKI neutral and will work with PKI components from any vendor (this includes CAs, certificates, CRLs, smartcards, etc.).