I recently came across some Advertisements on Motion Gaming in Sony Ericsson Mobile Phones. I am really surprised about how these motion gaming works. Then after a long search through web, I found a Chip that is capable of sensing motion on an object.
The above box like picture is not an Actual box but an Integrated Circuit of size 3x5x0.9mm dimension. So the actual size of this Chip is less than a 10Cents Coin. I hope you all could realize it. This Chip detects up-to 6 Positions or 3 Orthogonal Directions. This Chip was manufactured by STMicroelectronics. The datasheet of this IC is in this link.