Why do I need to undertake the agreement before logging in?

Users are required to undertake this agreement because this part of the RobotCub website contains information (formally, CUB Knowledge as defined in the RobotCub Consortium Agreement) that, for the convenience of the project participants, does not yet carry a General Public Licence or a Free Document Licence. No licence is required as long as the CUB knowledge is used exclusively for the purposes of carrying out the project but a licence is required if the CUB knowledge is used for any other purpose, either by members of the consortium, or by any other party.