A holographic AI.
S.I.L. is highly intelligent and sophisticated, but she lacks the emotional sincerity and complexity to understand any but the simplest human interactions. She is largely nieve, and has problems with metaphorical references. She tends to deal best with factual information and statistics than with abstract ideas.
S.I.L. can project a vast array of props of varying complexity to give her more humanlike characteristics. All of these props, however, are holographic in nature and can not physically interact with the material world.
As far as physical equipment, S.I.L. consists of the computer she is installed in, a holographic projector, and any peripherals that are connected to the computer.
S.I.L. was created by NanoStar Technologies Incorporated, one of the leading technological companies in existence. The company was formed by a merger of the top computer industries in the world, namely Microsoft, Apple, Hewlett-Packard, and IBM. She was later discontinued as advances continued and A.I. technology improved. She was stored on an external harddrive, and put into storage. From there, she disapeared by unknown means, and has only recently has activity of her been detected on the internet. She is known to carry an intense dislike for NanoStar Tech. Inc.