Back to blog homepage


Would you want a Mobile Phone Signal Shield in your Car?

Written by James Mills

Would you want a Mobile Phone Signal Shield in your Car?

Its engineers have created some of the most popular cars on Britain’s roads, winning over drivers with practical touches and high-tech features. But now Nissan’s boffins have turned to Victorian technology to solve a 21st Century problem; they’ve created a compartment in a car that blocks mobile phone signals.

The Japanese car maker came up with the Signal Shield as a way to tackle the growing problem of driver distraction.

Built into its popular Juke model, the Signal Shield prevents incoming phone calls, messages and social media notifications. But it still allows music to be played or navigation to be used, via a USB-wired connection.

The company hopes that it could be an effective solution to the problem of distractions behind the wheel, as so few drivers switch their smartphone to flight mode or ‘do not disturb’ settings.




How does the mobile phone signal shield work?

The technology behind Nissan’s Signal Shield dates back to 1836, and the Faraday cage. Invented by Michael Faraday, it uses material such as wire mesh to block electromagnetic fields. Incoming signals, including cellular or Bluetooth data, are distributed across the cage’s conducting material and prevented from reaching the smartphone inside.

To reconnect their phone to the outside world, perhaps when stopped at services, the driver simply opens the lid of the Signal Shield.

Nissan’s innovation is described as a ‘concept’ by the car maker, and the company will assess public reaction to such a feature being made available in its cars. It comes after tougher laws against mobile phone use were introduced in March. Now, drivers who simply touch their phone risk a £200 fine and six penalty points on their driving licence.

Alex Smith, managing director of Nissan GB, said: “Mobile phone use at the wheel is a growing concern across the automotive industry, and indeed society, particularly with the high number of ‘pushed’ communications, such as texts, social media notifications and app alerts that tempt drivers to reach for their devices.

“The Nissan Signal Shield concept presents one possible solution for giving drivers the choice to remove all smartphone distractions while driving. This is about delivering more control at the wheel, not less. Some drivers are immune to the activity of their smartphone, but for those who struggle to ignore the beeps and pings, this concept provides a simple solution in this very ‘connected’ world we live in.”



How widespread is the issue of driver distraction?

An RAC survey of more than 1700 motorists found that the proportion who admitted to using a handheld phone behind the wheel increased from 8 per cent in 2014 to 31 per cent last year.

Nissan says young drivers are more likely to be distracted by phones. Nearly half (49 per cent) of those surveyed by road safety charity Brake claimed they would go online or use an app while driving.

According to experts in Internet and technology addiction, people compulsively check their phones because every time there is an update through text, email or social media, they experience an elevation of dopamine, a neurochemical in the brain that makes them feel happy.

Pete Williams of the RAC said: “Our research shows that handheld phone use by drivers has reached epidemic proportions.

“As mobile phone technology has advanced significantly many people have become addicted to them. However, the use of a handheld phone when driving represents both a physical and mental distraction and it has been illegal since 2003.

“The Nissan Signal Shield is a good example of a technology that can help drivers be phone smart. For those who can’t avoid the temptation, this simple but pretty clever tech gives them a valuable mobile-free zone.”


Written by James Mills

Read more from James Mills

James Mills is a former editor of BBC Top Gear and Auto Express magazines. He now contributes to The Sunday Times Driving. His favourite car is the Caterham Seven.

These customers are real CarFinance 247 customers. They were invited to become a celebrity for a day, taking part in photoshoots and telling us all about their CarFinance 247 experience, and they were paid for doing so.

Best available rate
Total repayment
Total cost of credit

Best available rate

Total repayment

Total cost of credit

Representative example:

Borrowing £7,500 over 4 years with a representative APR of 25.4%, an annual interest rate of 25.4% (Fixed) and a deposit of £0.00, the amount payable would be £239.77 per month, with a total cost of credit of £4,008.96 and a total amount payable of £11,508.96.

Rates may differ as they are dependent on individual circumstances. Subject to status.

We compare products from 16 of the UK's top lenders to get you the best deal.