
STB are devices that are connected to a TV at the user's premises. These devices enable the user to receive unencrypted subscribed channels through an addressable system for viewing encrypted channels. They connect a TV to an external signal source and transform the transmitted signal into video content, which is then displayed on the screen. A smart STB is the one which brings internet to TV. It helps in connecting to internet and streaming online content. They have some or all the following features; streaming media from other connected devices to TV, the capability of recording the content from TV, Pause, Rewind, and Fast-forward Live TV WIFI function, support for multi-screen interaction and the use of embedded cable modem broadband coverage. Many of these devices come in a portable dongle format. The latest one is the Google's Chromecast.