Sweden Visualizes Virtual Walls to Stop Vehicular Terrorist Attacks

The recent wave of vehicular terrorist attacks has prompted Europe to initiate protective measures. After the truck rampage in Stockholm earlier this year, Sweden has been eyeing innovative solutions that involve virtual perimeters and invisible fences.

While concrete blocks and other physical barriers may arguably provide the best defense against vehicular attacks, they are often aeasthetically unpleasing and are believed to be sending the wrong kind of message to the population.

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