There is this intresting patent filed by Microsoft titled "Mood-actuated device, US 20140085181 A1" The abstract of the patent reads as follows:
The patent explains that the device could fly around the user, sense its emotional state either through a wearable device or an app, and respond accordingly. According to the claims- the device is made up of flexible material which is interlaced with wires that contract when heated, and wherein the microcontroller changes the shape of the flexible material by causing the wires to be heated or cooled."This document describes techniques and apparatuses for implementing a mood-actuated device. In various embodiments, mood information corresponding to a current mood of a user is received. An emotional state of the user is determined based on the mood information, and a mood-actuated device is controlled to react based on the emotional state of the user. In some embodiments, the mood-actuated device includes a flexible material that is configured to react by changing to a shape based on the emotional state of the user."
The shape changes from flat shape when relaxed to crumbled shape when stressed.
Its interesting how Microsoft is mixing fantasy with technology and coming out with the app. Whether the patent gets granted or not is all together a different issue, but surely is going to attract a lot of attention, hopefully: http://google.com/patents/US20140085181