The Liberty Alliance Project is a consortium of companies dedicated to developing open Internet identification standards to allow single sign-on networks.
Formed as a response to Microsoft's Passport initiative, the group argues that confidential information, such as user addresses and credit card numbers, is best held by a group of companies, rather than one single company.
The former president of the management board, United Air Lines chief information officer Eric Dean, resigned in early September to focus on the problems faced by the struggling airline.
Barrett's term will stay in place until December 2003.
The Liberty Alliance also announced that 26 new companies have joined the group, bringing the total number of members to more than 120.