Vaclav Slavik has announced PDF Signet 1.3, an update to his productivity app for OS X. PDF Signet is a tool for digitally signing PDF documents with certificates.

The new version adds compatibility with smartcards and eToken devices, enabling users to sign documents safely and securely. PDF Signet uses OS X technologies such as Keychain, Services, Automator and AppleScript.

PDF Signet 1.3 is US$9.99 and available worldwide exclusively through the Mac App Store in the Productivity category. Go to http://pdfsignet.com for more info.