by updating your browser . e mail password forgot your password teletrax is the most comprehensive global broadcast monitoring and verification service . 4c s teletrax service enables clients such as entertainment studios news sport and government organizations tv syndicators direct response and brand advertisers to determine precisely when where and how their video content is being used around the world.for more information about 4c visit www.4cinsights.com . over 2 100 television channels in 76 countries are constantly being monitored including all 210 u.s. dmas . 2016 4c insights inc. .