Security systems unveiled at CeBIT

HANNOVER, Germany (CNN) -- Security -- protecting data and personnel and, in recent months, combatting terrorism -- has shot to the top of many corporate agendas.

And the latest technology is getting personal.

At the CeBIT fair in Hannover this week, companies are tapping into the demand for data protection with voice and iris recognition systems.

Nuance Communications is showing a voice authentication system, and Panasonic has unveiled a system that scans a person's eyes for identification.

IN-DEPTH CeBIT 2002: Global Tech Fair     QUICKVOTE Are current computer and Internet security systems strong enough to deal with hackers and potential terror threats? Yes No View Results

The new Authenticam access control camera can protect cash dispensers, facilitate check-ins and be used for any type of identity check.

The system records a photo of an individual's iris to be stored within a databank.

When that individual needs access, he or she looks into a camera for three seconds to confirm they have authorisation.

It's a foolproof plan in theory. The pattern of a human eye is as unique as a fingerprint. Even identical twins have different iris patterns.

London's Heathrow Airport is currently testing a new identity system using similar technology, examining passengers' eyes rather than their passports as they pass through immigration control.

The system is said to be more secure, as well as faster -- taking a matter of seconds.