【AUTHOR KVANT｜An Analog Immobilizer to Prepare for Vehicle Theft While Preserving OEM Usability】

The OEM security alone feels a bit unreliable. But I’d like to avoid theft-prevention devices that add more and more operations every time.

If you’re such a person, consider AUTHOR’s analog immobilizer KVANT.

KVANT is an anti-theft item that manages vehicle starting using authenticated key fobs and the like. Its key feature is that it’s difficult to drastically change the car’s appearance or your usual way of using it, while allowing you to add protection to the starting portion while keeping the convenience of the OEM key.

Practical theft prevention that protects the starting section

Even if the vehicle is unlocked, the system can restrict starting unless the correct authentication can be verified.

Unlike security that alerts you to abnormalities with sounds, this is a countermeasure focused on making the vehicle harder to move. For those who want to consider protection not only for OEM security but also for the act of starting itself, this is likely a realistic option.

More features doesn’t automatically mean a better security device. Because it’s a car you use every day, usability that you can continue without strain is also important. KVANT is for people who want to increase security without significantly compromising everyday ease of use.

A model that’s easy to consider for a wide range of vehicles, such as classic cars and US cars

KVANT uses analog control. With an approach that differs from products that rely heavily on digital communication systems, it provides starting protection for the vehicle.

As a result, it’s a model that’s easy to consider not only for the newest vehicles, but also for vehicles where typical digital security options are often limited—such as classic cars, vintage cars, and US cars.

However, actual compatibility and installation methods vary depending on the vehicle model, model year, specifications, and existing equipment. It’s important not to judge based on impressions alone, but to confirm the actual vehicle and plan the configuration accordingly.

Security is more important to design around the vehicle than around the product

Even when installing the same KVANT, what needs to be checked changes depending on the vehicle condition and how it’s used.

The relationship with OEM functions, existing security equipment, your usual usage environment, where the car is parked, and how far you want to stack additional theft-prevention measures—after organizing these points, you determine the required configuration.

At Logon, we don’t think of it as “install the product and that’s it.” We also check that you won’t have trouble with everyday operations, that the interior finish looks natural, and that you can use it with peace of mind even after installation.

If it were me, I wouldn’t decide the security based only on the product name. I’d choose the configuration after looking at the vehicle and how it’s used. Rather than forcing extra functions, combining the necessary countermeasures in a realistic way is what makes it easier to use for the long term.

Install as a standalone solution, or combine with other countermeasures

KVANT is a product primarily designed around starting protection, but depending on the vehicle and storage environment, it may also be a better fit to combine it with an alarm-type security system and surrounding protection.

On the other hand, it’s not necessarily the case that you should add every piece of equipment. It’s important to organize the setup into a sensible balance by considering security level, operability, budget, and how you typically use the car.

If you’re thinking, “I don’t know what I should add to OEM security,” “I want to add theft prevention to a classic car,” or “I want to add starting protection without changing usability,” please put KVANT on the shortlist and consult us.

If you know the vehicle model, model year, type, and current equipment, confirmation is also smoother. While looking at the actual vehicle, we’ll separate what can be done from methods we’re less likely to recommend, and decide the direction together.

AUTHOR KVANT is suited for people like this

• You feel uneasy with OEM security alone
• You want to add theft protection to the starting portion
• You don’t want to drastically change the usability of the OEM key
• You want to avoid security that makes daily operations complicated
• You’re considering an anti-theft device for a classic car, vintage car, or US car
• You want to consult and decide on a configuration that fits your vehicle model and parking environment
• You want to choose realistic countermeasures without adding more equipment than necessary

Car security isn’t something you’re done with once it’s installed. Only when everyday use is effortless and the measures necessary to protect your important vehicle are combined does it become truly meaningful equipment.

Whether AUTHOR KVANT will fit your vehicle, or whether you’d be better off combining it with other security systems—at Logon, we’ll check your vehicle and usage, and work together to create a form that you can use comfortably for years.

Main specifications / specs

【Basic information】

Product name: KVANT
Brand: AUTHOR
Type: Analog immobilizer

【Authentication / functions】

Authentication method: Key fob / PIN code / Smartphone app
Engine start control: Yes
Can be used together with other security products: Yes

【Compatibility / use case examples】

Classic cars: Compatible
Vintage cars: Compatible
Newest vehicles: Compatible
US trucks: Compatible

【Examples of threats the system can defend against】

Relay attacks: Countermeasures available
CAN invaders: Countermeasures available
Key emulators: Countermeasures available
Unauthorized starting via OBD: Countermeasures available
Direct ignition connection: Countermeasures available

※ Organized based on publicly available information
※ Compatibility and installation details differ by vehicle model, model year, and specifications, so we will guide you after confirming the actual vehicle.