While not directly related to video games (yet), Microsoft has submitted an application to the PTO regarding new software developed to monitor employee performance through such bio-indicators as heart rate, facial expressions, body temperature, movement, and blood pressure. Predictably, privacy groups are concerned that this level of unprecedented intrusion is too much.
The application of this technology to video games could lead to all sorts of new gaming experiences. Imagine Eternal Darkness but instead of the fear meter being linked to your character, it is linked directly to you - your racing heart triggers the sound to cut out, or screen to shut off. This type of software can also be used by developers to gauge how effectively the emotions of their game are coming across - is the game exciting, relaxing, or just plain boring. Regardless, the software promises to usher in a new era of interactivity.