1. SP Technical Research Institute of Sweden Measurement Technology, Box 857 SE-50115 Borås Sweden
2. Stockholm University, Department of Psychology SE-106 91, Stockholm Sweden
3. Laboratory of Citizenship Science (LSC) Via Pasubio 2 - 00195, Rome Italy
4. DIMEC, Dept. of Mechanics and Machine Design Via all'Opera Pia 15A, University of Genoa I – 16145, Genoa Italy
5. University of Ljubljana, Faculty of Electrical Engineering Trzaska 25, 1000, Ljubljana Slovenia
6. National Physical Laboratory (NPL) Hampton Road, Teddington, Middlesex TW11 0LW, United Kindgom
7. Wageningen UR, Biometris PO-Box 100 6700AC, Wageningen Netherlands
8. Helsinki School of Economics Center for Knowledge and Innovation Research Box 1210 FIN-00101 Helsinki Finland