- We are testing new technology to search for missing people, based on wifi information and data from the mobile network, says David Gundlegård, senior lecturer at Linköping University.

Using mobile networks and wifi

About 20 students gathered on Monday at the Herrebro field, south of Norrköping.

Representatives from Missing People, the police and the Swedish Maritime Administration were also present.

While the students studying positioning systems connected their computers, research engineer Rasmus Ringdahl prepared to hide out in the terrain.

Rasmus Ringdahl, research engineer, was prepared to hide in the terrain.

"Have dressed me warm" Photo: Christian S Zetterdahl / SVT

"Technology could be used more"

- I have thought that I should hide with a little darker clothes and in an area where there is a little worse terrain, so that you are not visible.

You need to get close to find me.

Hopefully, with the help of technology, the students will be able to call me and search a little better when they get closer, says Rasmus Ringdahl, who dressed properly on the chilly morning.

- With a thick undergarment, I will be able to lie for an hour and a half without problems, he says.

When it comes to searching for missing persons, the technology is not used as much as one would like, says David Grundlegård.

- We try to combine both information from the mobile network, where we can get a fairly rough position on where the person's phone is, and wifi information, which means that the search area can be delimited, says David Gundlegård.

Hear the students tell more about the technology in the clip above.

Carl Skoglund, Ola Andersson, Lovisa Härold, Daniel Hedberg, Tobias Aspegårdh, Wilma Söderberg.

Photo: Christian S Zetterdahl / SVT