Researchers have created a maze, which repeats the map, pointed it at the start and end point of the route and completely filled with an alkaline fluid. At the destination, scientists put the gel mixed with acid, which spread throughout the maze, and the starting point add another alkaline solution with colored paint. The solution from the starting point is automatically moved to a place with the highest acidity, i.e. the point of termination of the route.
In Budapest, this alternative has already tested on one of the pizzerias of the city and thus were able to find the shortest path to it. Looks like the process is not too practical, but it works clearly faster than traditional satellite navigation.
The study's authors explain what the advantage of this alternative chemical system: the movement acid immediately shows all possible routes and, unlike a computer program makes it much faster.
