A smartphone zombie (German: Smombie) is a pedestrian who walks slowly and without attention to their surroundings because they are focused upon their smartphone. This is now a significant safety hazard as distracted pedestrians cause accidents. Cities such as Chongqing and Antwerp have introduced special lanes for smartphone users to help direct and manage them.
In 2014, China had over five hundred million smartphone users and more than half of them have a phone addiction. In Chongqing, the government constructed a dedicated smartphone-sidewalk, separating the phone users and the non-phone users. In Hong Kong, they are called dai tau juk (the head-down tribe).
Texting pedestrians may trip over curbs, walk out in front of cars and bump into other walkers. The field of vision of a smartphone user is estimated to be just 5% of a normal pedestrian's. An app which uses the phone's camera to make it seem transparent can be used to provide some warning of hazards. In Augsburg, Bodegraven and Cologne, ground-level traffic lights embedded in the pavement have been introduced so that they are more visible to preoccupied pedestrians. In Seoul, warning signs have been placed on the pavement at dangerous intersections following over a thousand road accidents caused by smartphones in South Korea in 2014. In October 2017, the City of Honolulu, Hawaii introduced a measure to fine pedestrians looking at smartphones.
Science fiction author Ray Bradbury predicted the phenomenon in the 1950s in his stories such as The Pedestrian and Fahrenheit 451. He wrote at the time how he observed it actually starting to happen in Beverly Hills,
File:Texting in the crosswalk.jpg|Crossing Broadway, Manhattan
File:Blonde woman with tattoos texting on street.jpg|Market Street, San Francisco
File:Flickr - Duncan~ - Mansion House.jpg|By Mansion House, London
File:Smombie sign in Osaka, March 2017.jpg|A warning sign in Osaka
File:Texting While Walking - Banur Kharar Highway - Landran - Mohali 2016-08-05 7096.JPG|In Mohali, Punjab