Erwin Fugger Barbara Prazak Sten Hanke Siegfried Wassertheurer Requirements and Ethical Issues for Sensor-Augmented Environments in Elderly Care. 887-893 2007 conf/hci/2007-5 HCI (5) http://dx.doi.org/10.1007/978-3-540-73279-2_99 db/conf/hci/hci2007-5.html#FuggerPHW07