SilverPush has developed cross-device technology to track ads by connecting various mobile and digital devices. It maps users with their digital devices. It links TV with mobile to trace user interaction. Companies spend huge amounts on TV ads. As there is no information on user engagement with these ads, the success of these campaigns or demographics of the viewers cannot be determined. As it is, TRP rating of a channel has no correlation with the success of an advertisement. SilverPush offers ‘ television and analytics suite ‘. The companies can get information on the target audiences due to their patented ‘ audio beacon technology.’ A TV ad is integrated with inaudible frequency before it is aired. The moment it is played, the SilverPush SDK installed in the user’s smart phone is activated, which pairs it with the TV or computer. After pairing, it is mapped under a unique ID and a persona is created for the user. It does not encroach on the privacy of the audience, since the platform can be activated by inaudible sounds. It has been launched towards the end of  2914. It has mapped about 680 million unique device IDs till date using this technology.