Why camera based motion control is problematic

[Grimes]

Not the only reviews that have commented on the issue.

http://www.totalvideogames.com/EyePet/review-14668.html

Under the uniform fluorescent strip lights in TVG's virtually windowless office, EyePet and the PS Eye performed flawlessly. However, when EyePet took a trip to a normal living room with an everyday window the results weren't so impressive;

http://www.eurogamer.net/articles/eyepet-review?page=2

the on-screen results vary depending on the lighting. Sketches copied in daylight are crisp and near-perfect, while those done under electric light in the evening are often patchy and broken.

http://uk.videogames.games.yahoo.com/0c/eye-pet-faf80c.html

the Magic Card when doubling up as an on-screen gadget has an annoying tendency to vanish if the camera isn’t seeing it precisely. Lighting could be the problem, although we were putting EP through his paces at midday in a bright and uncluttered room.

http://www.psu.com/EyePet-Review--a008271-p0.php

the EyePet loves natural daylight. In fact he loves it so much that when we've tried to play with him in the evening he hasn’t wanted to respond to a good chunk of our commands under artificial lighting; that’s despite us plugging in two extra lamps in the living room to comply with game's request for ample lighting.