The survey found that we own approximately four digital devices each, rising to five among Australian, German and UK respondents. This, combined with demand for TV and video content on-the-go, is fuelling the rise of multi-screening or ‘screen-stacking’ — the use of multiple digital devices at the same time.

We're quickly becoming a world of multitaskers. While you’re reading this, you might be watching TV or using a second device — smartphone, tablet or laptop. In a study of the multiscreening behaviors of audiences in 30 countries, the U.S. ranks first in stacking, spending on average 91 minutes a day watching TV while also doing something unrelated on a second device.

The other major social phenomenon driven by digital devices is ‘media stacking’. Half (49%) of people use their smartphones and tablets for completely unrelated activities while watching TV every week — such as surfing the net (36%), social networking (22%) or online shopping (16%).