Following+technologies

Underwater object-following robot (uses a camera to track object): http://cat.inist.fr/?aModele=afficheN&cpsidt=2393915

Hand system of robotic manipulator with human interface using laser pointer: http://ieeexplore.ieee.org/iel5/7694/21043/00975628.pdf?tp=&arnumber=975628&isnumber=21043

Active Vision Robot that Simulates Pursuit: [|http://ieeexplore.ieee.org/iel4/70/14372/00660834.pdf?arnumber=660834]

Human-following behavior using a light-emitting device: http://ieeexplore.ieee.org/iel5/7714/21147/00981906.pdf?tp=&arnumber=981906&isnumber=21147