Audience measurement : Other systems using mobile phones without using the watermarking

Other systems also use ordinary mobile phones and tablets panelists without using the watermarking. Their recognition technologies using channels and stations in ambient sound. These systems measure all channels and all radio stations without limitation. They measure audience share, they are in real time. Their technologies do not have hte handicap of the watermarking in noisy and parasitized environments. Some are integrated into larger systems with monitoring tools advertising and media planning, which brings more than other required system.