Many of us are guilty of it: texting, using Facebook or checking emails while crossing the road.
Now legislation has been introduced in New Jersey that would slap a US$50 ($72) fine and possible jail time on pedestrians caught using phones while they cross. And in the German city of Augsburg, traffic lights have been embedded in the pavement - so people looking down at their phones will see them.
The Herald on Sunday carried out an unscientific experiment at the busy intersection of Victoria and Queen Sts in central Auckland during the lunchtime rush to discover the scale of the problem here. Observing one of the corners, between 1pm and 1.30pm, we spotted 39 people using their cellphones while crossing.
Some people looked up briefly while crossing. Others kept their heads down, oblivious to what was going on around them.
In the past 10 years, the Accident Compensation Corporation has paid out more than $150,000 for texting-related injuries to a total of 272 Kiwis. About 90 per cent of injuries were a result of people tripping, falling or walking into things while texting.