Transaction Security, Inc., a leading developer of productivity software solutions, today announced the official release of its PDA-Protect? biometric software. The first product based on the company?s patent-pending Crypto-Sign technology, PDA-Protect provides biometric access control to Personal Digital Assistants (PDAs) -- including Windows Powered Pocket PC devices with phone and wireless capabilities -- without additional hardware requirements.

Unlike other methods, Crypto-Sign is based on the submission of a secret sign ? rather than a human signature -- on a PDA, Tablet PC or digitizer. The position of the user?s stylus is sampled many times a second as it moves over the surface to generate data which are analyzed and compared with a previously established template. For device access control, Crypto-Sign can be used to release electronic signatures to documents for proof of authorship and to generate encryption keys.