The best way to protect a bike from theft is to combine a solid lock, a good parking spot and extra protection such as an alarm, bike marking or a GPS tracker. A single security measure is rarely enough, especially for more expensive bikes and e-bikes.
Good bike security should do three things: make theft harder, deter the thief and increase the chances of recovering the bike if it does get stolen.
Protecting your bike from theft – where to start?
The best way to secure a bike is to lock the frame and rear wheel to a fixed object using a strong lock, such as a U-lock, a steel chain or a good-quality bike lock. For a more expensive bike, it’s worth adding a second layer of protection – a bike alarm or a GPS tracker.
The most important rule is simple: lock the frame, not just the wheel. The front wheel can be removed in seconds, so locking only the wheel doesn’t protect the whole bike. Secure bike locking should cover the frame and, if possible, the rear wheel as well.
Lock your bike to a fixed, solid object. This could be a bike rack, a sturdy railing or a dedicated bike locking point. Avoid locking your bike to thin signposts, flimsy fences or anything that can be lifted, cut or unscrewed.
Expert comment on bike security
According to available reports, 18,400 bike thefts were reported in Poland in 2026, which is 7.4% more than in 2025. Even more telling, though, is the detection rate of 14.2%, because it shows that most cases are never solved. That’s why, when securing a bike, you can’t think only about the lock itself. A good lock is meant to make theft harder, but for more expensive bikes and e-bikes you need layered protection: solid mechanical security, a good parking spot, documentation, an alarm and the ability to locate the bike once it’s been moved.
Bartosz Łączka, notiOne
Is a U-lock secure?
A U-lock is one of the best bike security options because of its rigid construction, which makes it harder to cut than a thin cable. A properly fitted U-lock should go around the frame, the rear wheel and the fixed object you’re locking the bike to.
A U-lock is particularly good in the city, for everyday parking outside work, a shop, a university or a block of flats. Good models are made of hardened steel and have a tamper-resistant lock mechanism.
The biggest advantage of a U-lock is the high level of bike security it offers. Its limitation is lower flexibility – it isn’t always easy to lock a bike to a thick post or an unusual rack with one. Before buying, check the size of the lock and how it mounts to the frame.
What makes a good chain for securing a bike?
The best choice is a steel bike chain, which offers a high level of protection. It should have thick links, a solid padlock and be made of hardened steel. A chain is heavier than a U-lock, but it’s easier to lock a bike to a variety of objects with one. A bike chain works well where you need more flexibility. It’s easier to wrap around the frame, wheel and a wide rack. It’s a good option if you often leave your bike in different places, or if you can keep the chain in one fixed spot, e.g. at work or in the garage.
Watch out, however, for locks that only look solid. A cheap, lightweight chain may look strong, but the real level of protection will be low. What counts is the thickness of the links, the quality of the padlock and the durability of the material.
Folding bike locks – are they a good option?
A folding lock is convenient to carry and better than a thin cable, but not every model offers a level of protection comparable to a good U-lock or a solid chain. It’s best treated as a compromise between security and convenience.
Folding bike locks are easy to mount on the frame and quick to unfold when you park. They’re a good option for anyone who wants to always have a lock with them on the bike. For short stops and places with moderate risk, a folding lock may be enough. For expensive bikes, it’s better to combine it with a U-lock, a chain or a rear-wheel lock.
How does a bike alarm work?
A bike alarm sounds a loud signal when it detects movement or an attempt to tamper with the bike. Its job is to deter bike thieves and attract the attention of people nearby.
A bike alarm makes particular sense in public places. A loud signal can put off a thief who’s looking for a quick, quiet theft.
However, an alarm shouldn’t be treated as your only security measure. In a noisy place it may be ignored, so it’s best combined with a U-lock, a chain or another bike lock.
Which GPS tracker for a bike?
A bike GPS tracker doesn’t physically stop a theft, but it helps you establish the bike’s location once it’s been moved. It’s an important addition to your security, especially for e-bikes, expensive bikes and bikes left outside the home.
For conventional bikes, we currently offer 2 solutions. notiOne go! PLUS is a Bluetooth tracker that works particularly well in large urban areas. If you ride a lot on roads and forest trails, the ideal protection is notiOne GPS PLUS, which runs on 4G LTE technology.
A GPS tracker can show the bike’s current or last known location in the app. Depending on the device, it may also offer movement alerts, route history, safe zones or a live tracking mode.
Once again, of course, the best results come from combining mechanical security with a GPS tracker. The lock makes theft harder, and GPS increases the chance of recovering the bike if the thief does manage to take it. This matters especially for e-bikes, because their value is higher and the financial loss hurts more.
What is bike marking?
Bike marking means giving the bike a unique identifier that helps identify its owner. A marked bike is harder to sell anonymously. Having your bike marked by the police, the local council or a specialist marking point potentially, and at least visibly, raises the level of protection.
To a thief, a marked bike is less attractive, because it’s easier to link to its owner during a police check. It’s also worth preparing your own documentation: write down the frame number, model, colour, size and distinguishing features, and take photos of the bike. This information is important when reporting a theft.
Which bike security should you choose?
For everyday bike protection, the best choice is a U-lock or a solid hardened-steel chain. For a more expensive bike, add a second layer of security – an alarm, a wheel lock or a GPS tracker.
Don’t be guided by price alone. Cheap security may cost less, but if an expensive bike gets stolen, the saving quickly loses its point. The right bike security depends on the value of the bike, where you park it and how long you leave it unattended. A bike left outside a shop for 5 minutes needs different protection from an e-bike parked outside a block of flats every day.
Frequently asked questions:
No. A thin cable can be an extra, but as the main security measure it’s too weak. It’s better to use it for your helmet, saddle or front wheel, and secure the bike with a U-lock or a chain.
Check the bike’s last location if you have a GPS tracker, gather the frame number, photos and proof of purchase, then report the theft to the police. It’s also worth posting the information in local cycling groups.
Yes. Lights, a cycle computer, panniers, a child seat, the battery and the display can all be stolen separately. If accessories are easy to remove, it’s better to take them with you.
Yes. The frame number helps confirm ownership of the bike and increases the chance of identifying it once it’s found. Write it down as soon as you buy the bike.
Yes, especially if they’re different types. Combining a U-lock and a chain, for example, forces the thief to use different tools and makes the theft take longer.
