Keyless Entry vs Traditional Keys: Pros, Cons & Security

From the satisfying click of metal in a lock to today’s seamless, touch-free access, car keys have come a long way. The motoring world has witnessed the dawn of vehicles, commencing with crank-start cars to classic mechanical keys and flip keys. Now, recent innovations include smart transponder chips, remote fobs, and modern keyless entry systems.

As automotive technology evolves, so do the ways we access and operate our vehicles’ security capabilities. While each era of entry systems offers its blend of convenience and tech-driven accessibility features, they also come with unique considerations. In this guide, we break down keyless entry pros and cons versus traditional key entry to help you understand which option best suits your lifestyle and vehicle protection needs.

What is Keyless Entry and How Does it Work?

Keyless entry is an advanced vehicle access system that allows you to unlock and sometimes start your car without physically inserting a key. Using a wireless transmitter, typically embedded in a fob or smartphone, the system communicates with your car through radio frequency identification (RFID) or Bluetooth technology. When you’re within a certain range, the vehicle detects the signal and automatically unlocks the doors, and in many cases, allows push-button ignition without needing to remove the fob from your pocket or bag.

How Traditional Car Keys Work

A traditional car key is a mechanical device cut to match a vehicle’s ignition and door lock system. When inserted into the lock or ignition barrel, the unique grooves and ridges align with internal tumblers to physically unlock or start the vehicle. Unlike keyless systems, these keys require manual operation and offer no remote functionality, but their simplicity reduces additional modern concerns like digital hacking methods, like relay attacks.

Fun Fact: There was a time when car keys did not exist; vehicle entry and starting engines have come a long way since 1910 in car key history. 

Benefits of Traditional Car Keys

Traditional car keys offer several notable advantages, particularly when it comes to security and cost. Since they lack digital components, they are immune to high-tech hacking methods such as signal interception or relay attacks. This makes them more economical to replace or duplicate compared to keyless systems.

Takeaway: Their mechanical simplicity means fewer technical malfunctions, positioning them as a dependable option for drivers who value straightforward, hands-on control of their vehicles.

Benefits of Keyless Entry Systems

Keyless entry systems offer cutting-edge convenience by allowing you to unlock and start your car without needing to take the key out of your pocket or bag. They often work with proximity sensors and smart technology for seamless access and ignition. Many systems also integrate with apps to allow you to control or monitor your vehicle remotely, as well as push-button start, automatic locking, and custom driver settings, enhancing both comfort and security.

Takeaway: Keyless entry combines ease of use with enhanced tech features for a smarter, more connected driving experience.

Common Security Risks With Both Systems

While both keyless entry and traditional keys provide security benefits, they also come with vulnerabilities and loopholes for theft.

• Traditional Keys: These mechanical keys can be copied or stolen, and vehicles without immobilisers are more susceptible to hot-wiring or forced entry.
  
• Keyless Entry Systems: They face risks like relay attacks, where thieves intercept and amplify your key fob’s signal to unlock and start your car from a distance.
  
• Both Key Systems: If owners experience awareness lapses, such as leaving keys in visible spots or failing to update security features, they can increase the risk of theft.

No system is completely foolproof, but understanding everything you need to know about the different car key types and the unique threats of each helps you take proactive steps to protect your car.

Keyless Relay Theft and Hacking Risks

While keyless entry systems are convenient, they also introduce issues like relay theft and hacking. This occurs when two thieves work together using signal-amplifying devices to trick your car into thinking the key fob is nearby, allowing them to unlock and drive off, never touching the key or leaving any sign of forced entry. Hacking tools can also sometimes be used to intercept or manipulate key fob codes on older or unpatched systems.

Tip: Using a signal-blocking pouch or storing your keys away from doors and windows can significantly reduce your risk, as well as learning how to secure your keyless car from relay attacks. 

Physical Theft and Lost Key Risks

While modern digital threats get much of the spotlight, physical theft remains a significant concern for both keyless and traditional car systems. Traditional keys can be easily copied, stolen, or lost. This, unfortunately, can give thieves direct access to your vehicle.

As for keyless fobs, if they are left in bags, jacket pockets, or unattended, they can be snatched or misplaced, making it easy for a thief to drive away undetected. For a situation of loss or theft, a keyless entry vehicle should have a car key programming reset. This proactive measure would help secure your car if the compromised fob gets into the wrong hands, allowing you to reinforce your vehicle’s security.

Takeaway: Regardless of the system, physical possession of the key or fob often means direct access, so staying vigilant is crucial.

Cost, Insurance and Installation Factors

When choosing between keyless entry and traditional keys, cost and practicality often play a big role. Lost traditional keys are generally cheaper and easier for owners to sort out with a car key replacement. As for keyless fobs and smart systems, they can be expensive to repair or reprogram if they involve dealer-only components. Installation of advanced keyless systems may also require specialised labour, adding to overall costs.

From an insurance perspective, vehicles with factory-installed immobilisers and keyless systems may qualify for lower premiums due to enhanced theft protection. However, insurers may also factor in the risk of keyless relay theft, which has grown in recent years. Whether you drive a new model or a reliable older car, it’s worth checking with your insurer to understand how your key system affects your coverage.

Which Option is Better for Your Vehicle and Lifestyle?

Based on the keyless entry pros and cons, choosing between keyless and traditional keys depends largely on your personal preferences, driving habits, and vehicle type.

If convenience, hands-free access, and smart features are priorities for you, keyless systems offer a seamless experience. They’re particularly useful for city drivers, families, or those who value tech integration, such as app-based controls. They also reduce awkward fumbling for keys, making entry and start-up quicker and more efficient, especially in busy or low-light situations.

On the other hand, traditional keys can be a better fit for drivers who prefer simplicity, lower replacement costs, and reduced vulnerability to digital theft. Their straightforward design also means fewer technical issues, making them a reliable choice for long-term use without the complexities of modern electronics. Classic car owners or those in areas with high rates of relay crime might find greater peace of mind in mechanical systems.

Ultimately, when choosing car key types, the best option is one that matches both your lifestyle and your expectations for vehicle security.

FAQs

Is keyless entry better than traditional key entry?

Between keyless entry and traditional keys, keyless technology offers convenience, hands-free access, and advanced features like push-button start and remote control via smartphone apps. However, traditional keys are often more affordable to replace and less vulnerable to digital theft, such as relay attacks. The better option depends on your lifestyle, security priorities, and the type of vehicle you drive.

What are the disadvantages of keyless entry cars?

Keyless entry cars’ disadvantages include being more vulnerable to relay attacks and potentially more expensive when replacing or reprogramming lost keyless fobs than traditional keys. This technology relies on battery power and electronic components, which may occasionally malfunction or require maintenance.

Can keyless cars be hacked?

Yes, keyless cars can be hacked, most commonly through relay attacks that capture and amplify the signal from your key fob to unlock and start the car. Hackers may also exploit software vulnerabilities if the system isn’t regularly updated. Using signal-blocking pouches and keeping your car’s software current can help reduce the risk of digital theft.

Is a push start car better than a key?

A push start car can be better than a key in that it allows you to conveniently start the engine with the press of a button, sometimes coming with modern features like keyless entry and enhanced theft deterrents. However, traditional ignition key systems can be simpler, more cost-effective, and less susceptible to certain high-tech theft methods.