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That answer needs an important qualification: opening a door, authenticating an immobilizer, starting an engine, and driving away are separate outcomes. A Flipper might interact with one layer without bypassing the others.
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Why the Flipper Zero became associated with car theft
The controversy grew after a February 2024 Canadian announcement about consumer hacking devices used in vehicle theft. Public remarks by Minister François-Philippe Champagne were reported as proposing a ban on the importation, sale, and use of such devices, with the Flipper Zero singled out in coverage. The reporting did not establish a fully specified law, and that 2024 announcement should not be treated as proof of Canada’s legal position on September 4, 2026. A current legal conclusion requires checking the relevant Canadian legislation and regulations.
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What the automotive locksmith actually found
Automotive locksmith Nic, known online as Surlydirtbag, tested vehicle-key technologies with a Flipper Zero, according to Hackster’s report. He found that some older transponder types could be read and emulated, while modern vehicle keys were substantially more complicated.
Even in a vulnerable older vehicle, emulating a transponder did not necessarily solve the entire theft problem. A mechanical ignition could remain an obstacle. In other words, satisfying part of the key-authentication process is not automatically equivalent to starting and driving the vehicle.
Those tests are useful evidence, but they are not a universal vehicle survey. They do not establish a complete list of vulnerable makes and models, prove that every older vehicle is susceptible, or show that every modern vehicle is secure. They also do not measure how common any particular theft method is.
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What the Flipper Zero can do
The manufacturer describes the Flipper Zero as a portable tool for lawful exploration of radio protocols, RFID, NFC, infrared, and electronics. Its relevant capabilities include:
- a sub-1 GHz radio transceiver, with region-dependent support for bands including 315, 433, 868, and 915 MHz;
- 125 kHz RFID reading and emulation for certain supported credentials;
- NFC and infrared functions;
- Bluetooth connectivity; and
- GPIO and hardware-debugging interfaces.
See the manufacturer’s specifications and product information and its documentation hub.
These features can save or emulate certain supported signals and credentials. They do not make every radio transmission copyable, and they do not give the device a universal understanding of automotive immobilizers, smart keys, diagnostic systems, or vehicle networks.
Can a Flipper clone a car key?
Sometimes, with narrowly defined older systems; generally not as a simple process with modern smart keys.
“Clone” is often used too loosely. It might mean:
- recording and replaying a remote-control transmission;
- emulating an immobilizer transponder;
- duplicating an RFID credential; or
- programming a new authorized key using vehicle-specific professional equipment.
Those are different operations. Some older, weakly protected transponder systems may be readable or emulatable. That does not mean an encrypted proximity key can be copied by capturing one ordinary transmission. Physical access to the original key, specialist locksmith equipment, vehicle-specific programming tools, or a separate vehicle-network attack changes the question entirely.
The Flipper’s ability to read and emulate certain low-frequency RFID credentials, confirmed in the manufacturer’s material, is not evidence that it can duplicate modern automotive smart keys.
Why modern keyless systems are harder
Fixed codes
A basic fixed-code system sends essentially the same identifier repeatedly. If there is no meaningful authentication, capturing that identifier and replaying it later is conceptually straightforward.
Rolling codes
Rolling-code systems change the valid message over time. A previously recorded unlock transmission should normally be rejected when replayed later. Rolling codes therefore address a simple replay attack, although they do not solve every automotive-security problem.
Cryptographic authentication
More advanced systems authenticate the key and vehicle using cryptographic protocols rather than treating a reusable identifier as a password. The exact design varies by manufacturer, model, market, and key supplier.
Immobilizers
The immobilizer is the critical distinction. A remote may control door locks while a separate transponder or smart-key exchange controls engine authorization. A device that opens a door may still be unable to authorize starting.
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Proximity keys
Passive-entry and push-button-start systems communicate with a key that may be in the owner’s pocket, bag, or home. Their security depends on how the key and vehicle establish proximity and authenticate one another. “Keyless” does not describe one universal technology.
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Relay attacks are not the same as Flipper replay
A replay attack presents a previously recorded message again. A relay attack can instead extend communication between a real key and the vehicle, making the vehicle believe its legitimate key is nearby when it is not.
An analogy helps:
- Replay: “Here is a recording of an earlier conversation.”
- Relay: “The real speaker is still talking, but I am extending the conversation over distance.”
This distinction is why a Flipper Zero’s ordinary signal-recording features should not be treated as equivalent to a relay system. Hackaday’s coverage of the locksmith’s explanation makes the same separation.
Relay attacks are also not proof that every passive-entry vehicle is equally exposed. Design details, key sleep behavior, distance checks, software updates, and model-specific protections matter.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where CAN-bus and diagnostic attacks fit
Vehicles contain internal networks that connect electronic control modules. If an attacker gains the right kind of physical or electronic access, weaknesses in network segmentation or exposed communication paths can allow vehicle functions to be influenced.
That is a different category from recording a key-fob signal. A Flipper Zero is not synonymous with CAN-bus attacks, and specialized automotive hardware and vehicle-specific knowledge may be more relevant. The existence of CAN-bus attacks does not prove that they are the dominant form of car theft, nor does it justify publishing wiring locations, injection commands, bypass sequences, or instructions for starting a vehicle.
Vehicle age matters—but there is no universal cutoff
The reported testing used vehicles roughly “at least 20 years old” as a description of the kind of systems where weaknesses might appear, not as a rule. A vehicle’s security depends on:
- model year, market, and trim;
- the key and immobilizer supplier;
- whether it uses a mechanical key, transponder, remote fob, proximity key, or combination;
- whether the ignition is mechanical or electronic;
- aftermarket alarms, remote starters, or other modifications; and
- known model-specific weaknesses.
A 20-year-old vehicle is not automatically vulnerable, and a newer vehicle is not automatically immune. Some older enthusiast or specialty vehicles may also be valuable, so age alone is a poor measure of theft risk.
How to judge a claim that a Flipper can steal a specific car
- Identify the exact vehicle: make, model year, market, trim, and key system.
- Define the claimed outcome: signal capture, door unlocking, immobilizer authentication, engine starting, or driving away.
- Ask what else was used: a relay system, programming tool, diagnostic device, network interface, or physical key access.
- Check the conditions: was the vehicle stock, and was the attacker near or holding the legitimate key?
- Demand reproducible evidence: a short video may omit the decisive step or use a modified vehicle.
Claims that omit these details often turn a limited demonstration into a misleading generalization.
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Proportionate ways to protect a vehicle
- Review the owner’s manual. Disable passive entry or keyless unlocking if the vehicle provides that option.
- Store keys away from exterior doors and windows. This can reduce exposure to relay-style attacks.
- Use a Faraday pouch or box carefully. It helps only if it actually blocks the relevant signals. Test it with your own key and vehicle, and retest it periodically because shielding materials and closures can fail.
- Use a visible steering-wheel lock. It adds a physical barrier and visible deterrence, though it is not a complete defense against towing or component theft.
- Keep software and recalls current. Follow manufacturer notices and dealer guidance.
- Consider additional security for higher-risk vehicles. A reputable installer may recommend an aftermarket immobilizer, alarm, or tracker based on the specific vehicle. A tracker generally assists recovery rather than preventing theft.
- Ask a qualified automotive locksmith about older vehicles. They can discuss known weaknesses and legitimate replacement-key options after verifying ownership.
No single measure guarantees protection. The right combination depends on the vehicle’s key system, location, value, and known model-specific risks.
Three verdicts, depending on the vehicle
Modern keyless car: a Flipper Zero alone is generally not a credible general-purpose theft tool. Stronger authentication and immobilizer controls make simple replay or casual cloning ineffective.
Older, weakly protected vehicle: limited reading or emulation may be possible, but the exact system and remaining mechanical or electronic barriers determine what that means in practice.
Overall vehicle security: the relevant threat model includes relay, physical, diagnostic, network, and key-programming attacks—not just one consumer gadget. The Flipper Zero is a legitimate electronics and security-research tool, but its existence should not be confused with a universal car-theft capability.
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