The unit can hook to anyone whi is lost, stranded but still have his mobile phone.It could detect and find people according to their mobile devices even if there is no reception.

This portable outdoor device can allow search and rescue forces to detect and rescue mountaineers and travellers stranded in the ground even if there is no communication capabilities available. 

The pack is durable and incooporate foldable legs to position the pack on the ground when either the terrain is not leveled or is muddy/wet.