When tracking the positioning in space of the arm and hand, the device can detect subtle movements all directions. (goodereader.com)
For example, the majority of candidates are eliminated from consideration for tenure track positions at a major universities based on the names of the journals that have published their recent findings. (realclimate.org)
Having an automatic canopy that adjusts itself by tracking the position of the sun can also be pretty neat. (mommystroller.com)