how to improve your car key’s security

Last Updated on February 11, 2025 by Alan Weir

Unlocking Security: How to Keep Your Car Key Safe and Sound

Ah, the trusty car key. It’s something we often take for granted until—oh, no!—we find ourselves fumbling through our pockets or searching under cushions, all in a desperate bid to locate that elusive piece of metal and plastic. But it’s not just about keeping track of it; it’s about ensuring that your car key—and everything it unlocks—remains safe from those with less-than-good intentions.

In this article, we’re going to dive deep into the world of car key security. I’ll be sharing expert tips that can make all the difference in securing your vehicle and all its contents. And because we believe sharing is caring, you can always find more detailed information about key technology on reputable sites like West Midlands Police or Thatcham Research. Let’s get started, shall we?

Understanding Key Technology

First things first, let’s talk about key technology. Gone are the days of simple, metal keys that could be replicated easily. Nowadays, car keys can feature complex mechanisms such as transponders, remote keyless entry (RKE) systems, and even smartphone apps. Transponder keys contain chips that communicate with the vehicle’s ignition system, making it nearly impossible to start the car without the right key. Remote locking systems allow you to lock or unlock the car at the touch of a button from a distance. All of this tech is great for convenience, but it also introduces its own set of vulnerabilities.

Secure Your Keys, Secure Your Car

  1. Invest in a Faraday Pouch or Box
    One of the simplest and most effective ways to improve your key’s security is to invest in a Faraday pouch or box. These special cases block electromagnetic signals, preventing thieves from using relay attacks—a method where they capture the signal from your key fob to unlock and start your car. You can find options as affordable as £10 online.

  2. Use a Steering Wheel Lock
    A visual deterrent can be your best friend in the fight against car theft. Steering wheel locks are not only relatively inexpensive but also send a clear message to would-be thieves that your car is not an easy target. Even if they manage to bypass your key’s technology, they’ll be met with a tangible barrier when they attempt to drive away.

  3. Double Down on Security Features
    Many modern cars come equipped with multiple layers of security features, such as immobilisers and alarms. Ensure these features are properly activated. If your vehicle didn’t come with them or if it’s an older model, consider having an aftermarket system installed. Reliable brands like Clifford offer considerable peace of mind.

  4. Keep Your Keys Safe
    It may sound obvious, but many of us often leave our keys in places that scream "pick me!" Don’t leave them on the kitchen counter or in a conspicuous place. When you enter your home, make it a habit to have a safe and dedicated spot for your keys. Think about installing a secure key holder mounted out of sight, or even a combination lockbox.

  5. Opt for Keyless Entry Alternatives
    If you’re in the market for a new car, consider opting for a model that has a ‘keyless’ method of unlocking and starting, but be aware of the risks. While these advanced systems are convenient, they can also be vulnerable to tech-savvy thieves. Support any keyless entry system with an additional layer of security; for instance, using a steering wheel lock or an additional alarm system as mentioned earlier.

  6. Regularly Change Your Key Codes
    Some models allow you to change the code or settings for your key fob. While you might not think it’s necessary, periodic changes can thwart any attempts from someone who might have acquired the previous code. Refer to your owner’s manual or a trusted online resource to learn how to update your key’s information.

  7. Upgrading Your Key Fob
    If your key fob is showing signs of age—maybe it’s not functioning as well—or if you’ve experienced any instances of theft or attempted theft, think about upgrading to a more sophisticated model. Modern fobs come equipped with advanced technology that’s harder to clone. An expert locksmith can guide you on your options.

  8. Keep Software Updated
    Many modern vehicles are equipped with onboard software that should be kept up-to-date. Manufacturers often release patches to improve security vulnerabilities in their systems. You’d hate to find out that a malicious entity could exploit your vehicle’s software vulnerabilities because you never got around to updating it.

  9. Educate Yourself on Your Vehicle’s Weak Spots
    Just like any homeowner should know their property well, you should be well-acquainted with your vehicle and its features. Know how the ignition, doors, and trunk switch operate. Understanding how each component works helps you identify potential weaknesses that might be exploited by a thief. Trust me: knowledge is power!

  10. Secure Your Smart Key Management
    If your car operates via a smartphone app, you need to take extra measures to ensure your device is secure. Keep apps updated, use strong passwords, and enable biometric locks where possible. Lost or stolen devices can lead to unauthorized access to your vehicle—so treat your smartphone with the same caution you would your key.

  11. Monitor Your Vehicle’s Location
    Consider investing in a GPS tracking system. If your vehicle does get stolen, having a way to locate it can significantly increase the chances of recovery. Many tracking devices allow you to set geographical boundaries and send you alerts if your car enters or leaves a designated area.

  12. Regularly Inspect Your Keys and Fobs
    Keep an eye on your keys and key fobs regularly. Look for signs of wear, such as cracks or malfunctioning buttons. Sometimes a key fob can show odd behaviour which might indicate impending failure. As an experienced locksmith, I’ve seen it all; spotting issues early can save you a lot of headache down the road.

  13. Consider Smart Key Options
    Some vehicles offer smart keys that require a specific sequence of actions to start the car. These keys can provide an additional layer of security as they often feature unique encryption codes that are harder to crack. Investigate whether your vehicle can be fitted with this more advanced key technology.

  14. Community Awareness
    Never underestimate the power of your local community. Join forums or social media groups dedicated to your local neighbourhood. Keeping tabs on recent car thefts can alert you to new tactics being employed by thieves, helping everyone stay vigilant.

Don’t Skip on Professional Help

If you’re concerned about your car key security, don’t hesitate to consult an expert car locksmith. They can provide tailored advice specific to your vehicle’s make and model. It’s an investment in your peace of mind, and remember, they can also help you cut new keys if your old ones have started to show wear.

By taking proactive steps, we can empower ourselves and others in our communities to enjoy the safety and freedom our vehicles provide. With some diligence and a touch of savvy security planning, you’ll not only protect your car key but also the precious contents inside your car. And let’s face it, no one wants to deal with the hassle of a stolen vehicle, even if you do have an extra cup of tea waiting for you at home. So, keep your keys close, your eyes open, and take control of your car’s security today.

Alan Weir of Weir Locksmiths - contributor to RevLock.co.uk
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Alan Weir – Master Locksmith with 30+ Years of Experience

Alan Weir is the founder of Weir Locksmiths and a Master Locksmith with over three decades of experience. Renowned for his expertise in home and automotive security, Alan has built a reputation for providing reliable and innovative locksmith solutions across the UK.

A certified member of the Master Locksmiths Association (MLA), Alan specialises in residential, commercial and automotive locksmith services including car key replacement, transponder programming, and advanced security systems. His dedication to the field has earned him thousands of satisfied customers and glowing reviews on platforms like Checkatrade.

Now contributing to RevLock, Alan shares his expert knowledge to all of RevLocks visitors.