There's been a dramatic rise in the use of smart phones and ipads in Sweden in the last couple of years.
The latest figures show that just under 90 percent of Swedes today are online - about a half of them have smart phones, many of them are children. The fastest growing group connected to the internet around the clock are 12 to 15 year olds.
Some argue that's having a dramatic effect on sleep and concentration disorders.
Tom Sullivan reports. Listen here: