You've all heard of TiVo. Sure you have. TiVo is the hard-disk video recorder that automatically records all of your favorite shows. Then there's ReplayTV, the other leading brand. Late fall 2001, ReplayTV crossed over a line that should never have been crossed, one that threatened the future of consumer products.
Tognazzini, Bruce. Nielsen Norman Group (2002). Articles>User Interface>Ethics>Assessment