I have introduced this technology and also used in my software like Media Player. 
INter SOftware IDentification technology is the technique by which one software understand the action taken in other software.
For eg, there is one software called Toners which I have madeand it is available for download. It stores the path of all songs which are in the hard disk of your computer. It also provides you with a easy way to search the needed songs. Now in the Media Player 4, if INSOID TECHNOLOGY is switched on then , if you click any stored songs in TONERS , then Media Player can play that song. So, MP understood the actions taken in the TONERS.