TMD’s keyless bike lock is a $280 solution to a $60 problemI’ve seen lots of so-called “smart” bike locks over the years, but none so far could justify the added cost. A newcomer that got its start securing ATMs for banks is trying to change that. There’s nothing wholly unique about the TMD Chain Lock, but the combination of materials, performance, and insurance-friendly ART-2 certification makes it worth considering.
TMD’s first bicycle lock combines a Bluetooth proximity sensor and motion alarm with a slender core of hardened steel chain wrapped in a soft and lightweight sleeve of high performance Dyneema and Kevlar fibers. That makes this lock tough, yet flexible enough to conveniently wrap around your seat post when cycling. TMD also designed the keyless lock to be shareable with friends and family, and capable of withstanding shock, rain, dust, and extreme temperatures. That makes it highly suited to city bikes parked outside and ridden all year long.
I like the TMD Chain Lock I’ve been testing, but spending €249 (about $283) on something that typically costs far less is a big ask.
The chasm separating ATM security from bike security isn’t as wide as it might seem. TMD developed a centralized, keyless system for banks to authorize access to its ATMs for service, replacing the physical master keys that created a massive security risk whenever they were lost or stolen. It’s this same keyless knowhow that TMD now brings to the Bluetooth bike lock.
There are many advantages to turning phones into digital keys, especially in bike-centric societies like the Netherlands, which TMD calls home. For example, I could ride to the train station and have an authorized friend pick the bike up later. And the keyless convenience quickly adds up for those of us that use our bikes to commute to work, pick up the kids from daycare and football, run errands, and shop for groceries. In my home city of Amsterdam, it’s not unusual to grab my keys more than a dozen times a day to lock and unlock my bike.
I tested the TMD Bike Lock in the 110cm (about 3.5 feet) length with an iPhone 15 Pro running the latest version of iOS. Generally — I’d say 19 out of every 20 attempts — the TMD Chain Lock immediately recognized my approach, allowing me to seamlessly unlock it with a push on the lock’s only button. When I did have to wait, it took no more than a second for the button to flash blue, indicating the lock had detected my nearby phone in a pocket or bag. Pretty good, but that convenience comes with some tradeoffs.
For example, my bike remained within range of my phone when parked outside a cafe, so anyone could have walked up and unlocked it. I had the same issue when cooking in my kitchen with the bike parked just outside the window, as I normally do. In both cases, I either had to move the bike or turn off my phone’s Bluetooth radio. And since my phone is now my bike key, if it’s stolen, my much more expensive e-bike is vulnerable as well.
TMD says its Chain Lock is “immune to conventional drilling and picking,” but all bike locks can be defeated by a determined thief. The Chain Lock has earned an ART-2 certification issued by an independent Dutch organization that tests and certifies bike locks on a scale from one to five. Most Dutch insurance companies require ART-2 at a minimum to validate policies on expensive e-bikes and cargo bikes. It’s akin to something like a Sold Secure Silver or Gold rating in the UK, a 2 Roues in France, and VdS approval in Germany. (The US and Canada do not have a single, centralized, independent testing body that dictates insurance requirements for bicycles.) Should your bike be stolen, you can produce a digital log file for the insurance company from within the TMD app as official proof that your bike was locked.
To deter theft, the lock also features an integrated motion alarm that can be armed and disarmed in the app or with a double press of the lock’s button. At 100dB it’s less shrill than I expected, but it does the job when it senses the lock being jostled. It shuts off automatically after about 10 seconds of inactivity.
TMD tells me that a future software update will let you disable these sounds.
The lock is rather noisy in day-to-day usage. Unlocking it is accompanied by a loud tone that hits 75dB when measured at a distance of one meter. I hate that it draws attention to me and my expensive e-bike. Just flash green and unlock — that’s more than enough. TMD tells me that a future software update will let you disable these sounds.
TMD claims the lock’s battery will last up to nine months on a single charge. However, my test unit has already dropped 16 percent after a week of testing, suggesting a lifespan closer to six or seven weeks. But that’s likely because I store my bikes inside my house when not in use, so the lock’s Bluetooth radio is constantly being lit up by my phone’s proximity.
To prevent water and dust ingress and leave more room for the battery and speaker, TMD says it opted for a shallow magnetic pin connector – not USB-C – to charge the Chain Lock. That’s a shame because plenty of phones have USB-C ports and offer even better IP68/69 protection against rain and debris. That means you’ll need to have the lock’s proprietary cable on you should you ignore the low-battery warnings and let it die. It can be quickly recovered, however: I saw a completely dead (and locked) Chain Lock spring back to life after just two or three minutes of charging off the USB-C port of an iPhone.
You can still unlock the TMD Chain Lock should your phone die. You just have to tap in your four digit “emergency code” on the lock’s button. Choosing a code like 1324 would require 1 push, then 3 pushes, then 2, and 4. The ring around the button changes colors to visually prompt you for each new number. The TMD app also lets you share the lock with friends and family, who can also come to your rescue with their own phones.
1/6100cm is my preferred length.
For added peace of mind, it’s always a good idea to double-lock your bike, so most urban cyclists combine a chain lock with a ring lock that’s permanently mounted to the frame and prevents the rear wheel from spinning. TMD has already announced an “anti angle grinder” U-Lock and GPS-equipped Ring Lock coming later this year. Having my phone unlock both of my bike’s locks simultaneously would really up the convenience factor and better justify TMD’s pricing.
Right now, paying €249 when equivalent analog bike locks costs a quarter of that would be foolish for most people. The ART-2 certified ABUS 8900, for example, in the same flexible 110cm length, costs around €60 (about $68). If you can afford the TMD Chain Lock and really hate keys, or need a keyless lock that can be shared digitally with others, then have at it. Otherwise, it won’t justify its exorbitant price.
- Security rating: ART-2 certified
- Operation: Keyless Bluetooth
- Deterrence: Motion activated 100dB alarm
- TMD Locks App: Manages sharing, location tracking and more (iOS and Android compatible)
- Sizes: 70cm (1.3kg), 110cm (1.7kg) and 160cm (2.1kg)
- Colorways: Navy, Beige and Black
- Power: 9 month battery life. Charge to 100% in 2 Hours
- Durability: IP57 water and dust resistant
- Warranty: 2 years
- Pricing: from €229
All photography by Thomas Ricker / The Verge
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#TMDs #keyless #bike #lock #solution #problemElectric Bikes,Reviews,Rideables,Tech,Transportation
I’ve seen lots of so-called “smart” bike locks over the years, but none so far could justify the added cost. A newcomer that got its start securing ATMs for banks is trying to change that. There’s nothing wholly unique about the TMD Chain Lock, but the combination of materials, performance, and insurance-friendly ART-2 certification makes it worth considering.
TMD’s first bicycle lock combines a Bluetooth proximity sensor and motion alarm with a slender core of hardened steel chain wrapped in a soft and lightweight sleeve of high performance Dyneema and Kevlar fibers. That makes this lock tough, yet flexible enough to conveniently wrap around your seat post when cycling. TMD also designed the keyless lock to be shareable with friends and family, and capable of withstanding shock, rain, dust, and extreme temperatures. That makes it highly suited to city bikes parked outside and ridden all year long.
I like the TMD Chain Lock I’ve been testing, but spending €249 (about $283) on something that typically costs far less is a big ask.
The chasm separating ATM security from bike security isn’t as wide as it might seem. TMD developed a centralized, keyless system for banks to authorize access to its ATMs for service, replacing the physical master keys that created a massive security risk whenever they were lost or stolen. It’s this same keyless knowhow that TMD now brings to the Bluetooth bike lock.
There are many advantages to turning phones into digital keys, especially in bike-centric societies like the Netherlands, which TMD calls home. For example, I could ride to the train station and have an authorized friend pick the bike up later. And the keyless convenience quickly adds up for those of us that use our bikes to commute to work, pick up the kids from daycare and football, run errands, and shop for groceries. In my home city of Amsterdam, it’s not unusual to grab my keys more than a dozen times a day to lock and unlock my bike.
I tested the TMD Bike Lock in the 110cm (about 3.5 feet) length with an iPhone 15 Pro running the latest version of iOS. Generally — I’d say 19 out of every 20 attempts — the TMD Chain Lock immediately recognized my approach, allowing me to seamlessly unlock it with a push on the lock’s only button. When I did have to wait, it took no more than a second for the button to flash blue, indicating the lock had detected my nearby phone in a pocket or bag. Pretty good, but that convenience comes with some tradeoffs.
For example, my bike remained within range of my phone when parked outside a cafe, so anyone could have walked up and unlocked it. I had the same issue when cooking in my kitchen with the bike parked just outside the window, as I normally do. In both cases, I either had to move the bike or turn off my phone’s Bluetooth radio. And since my phone is now my bike key, if it’s stolen, my much more expensive e-bike is vulnerable as well.
TMD says its Chain Lock is “immune to conventional drilling and picking,” but all bike locks can be defeated by a determined thief. The Chain Lock has earned an ART-2 certification issued by an independent Dutch organization that tests and certifies bike locks on a scale from one to five. Most Dutch insurance companies require ART-2 at a minimum to validate policies on expensive e-bikes and cargo bikes. It’s akin to something like a Sold Secure Silver or Gold rating in the UK, a 2 Roues in France, and VdS approval in Germany. (The US and Canada do not have a single, centralized, independent testing body that dictates insurance requirements for bicycles.) Should your bike be stolen, you can produce a digital log file for the insurance company from within the TMD app as official proof that your bike was locked.
To deter theft, the lock also features an integrated motion alarm that can be armed and disarmed in the app or with a double press of the lock’s button. At 100dB it’s less shrill than I expected, but it does the job when it senses the lock being jostled. It shuts off automatically after about 10 seconds of inactivity.
TMD tells me that a future software update will let you disable these sounds.
The lock is rather noisy in day-to-day usage. Unlocking it is accompanied by a loud tone that hits 75dB when measured at a distance of one meter. I hate that it draws attention to me and my expensive e-bike. Just flash green and unlock — that’s more than enough. TMD tells me that a future software update will let you disable these sounds.
TMD claims the lock’s battery will last up to nine months on a single charge. However, my test unit has already dropped 16 percent after a week of testing, suggesting a lifespan closer to six or seven weeks. But that’s likely because I store my bikes inside my house when not in use, so the lock’s Bluetooth radio is constantly being lit up by my phone’s proximity.
To prevent water and dust ingress and leave more room for the battery and speaker, TMD says it opted for a shallow magnetic pin connector – not USB-C – to charge the Chain Lock. That’s a shame because plenty of phones have USB-C ports and offer even better IP68/69 protection against rain and debris. That means you’ll need to have the lock’s proprietary cable on you should you ignore the low-battery warnings and let it die. It can be quickly recovered, however: I saw a completely dead (and locked) Chain Lock spring back to life after just two or three minutes of charging off the USB-C port of an iPhone.
You can still unlock the TMD Chain Lock should your phone die. You just have to tap in your four digit “emergency code” on the lock’s button. Choosing a code like 1324 would require 1 push, then 3 pushes, then 2, and 4. The ring around the button changes colors to visually prompt you for each new number. The TMD app also lets you share the lock with friends and family, who can also come to your rescue with their own phones.
1/6
For added peace of mind, it’s always a good idea to double-lock your bike, so most urban cyclists combine a chain lock with a ring lock that’s permanently mounted to the frame and prevents the rear wheel from spinning. TMD has already announced an “anti angle grinder” U-Lock and GPS-equipped Ring Lock coming later this year. Having my phone unlock both of my bike’s locks simultaneously would really up the convenience factor and better justify TMD’s pricing.
Right now, paying €249 when equivalent analog bike locks costs a quarter of that would be foolish for most people. The ART-2 certified ABUS 8900, for example, in the same flexible 110cm length, costs around €60 (about $68). If you can afford the TMD Chain Lock and really hate keys, or need a keyless lock that can be shared digitally with others, then have at it. Otherwise, it won’t justify its exorbitant price.
- Security rating: ART-2 certified
- Operation: Keyless Bluetooth
- Deterrence: Motion activated 100dB alarm
- TMD Locks App: Manages sharing, location tracking and more (iOS and Android compatible)
- Sizes: 70cm (1.3kg), 110cm (1.7kg) and 160cm (2.1kg)
- Colorways: Navy, Beige and Black
- Power: 9 month battery life. Charge to 100% in 2 Hours
- Durability: IP57 water and dust resistant
- Warranty: 2 years
- Pricing: from €229
All photography by Thomas Ricker / The Verge






![This former notorious red-light district is now one of the world’s top AI hubs | TechCrunch
What every U.K. AI startup wants to know these days is, how can I get office space in King’s Cross?
The area is so hot that a VC firm allegedly recently won a deal by promising a founder office space in the neighborhood. “We stop at nothing to win deals [for] and to support” founders, “including helping them source office space when needed,” the firm told me when asked about the rumor, declining to confirm or deny any details.
The neighborhood’s popularity began back in 2016 when DeepMind — then newly acquired by Google — moved in. Soon after, a flood of AI startups followed, wanting to be around the Google DeepMind magic. Today, they hope to take advantage of the cluster of AI talent there.
This has transformed King’s Cross into one of the world’s top AI hubs, rivaled only by San Francisco and Beijing. Around London, it’s known by the sobriquet “Knowledge Quarter,” as it’s home to names like OpenAI, Meta, Isomorphic Labs, Cusp AI, Wayne, Recursive, and, a little farther down the road, Synthesia and Anthropic. The European Technology Network (ETN) just moved into a glossy new office nearby, while University College London sits around the corner.
Mixed in with the new developments are trendy food spots like Hoppers and BAO. Hop a train from King’s Cross, and founders can be in Cambridge in 45 minutes to source talent or can be in Paris in two hours to strike a deal.
Who would have guessed that a little more than 20 years ago, this was one of the seediest areas in London?
“In the ’80s, crack and heroin made the area a major narcotics market,” Hussein Kanji, an investor at Hoxton Ventures, said, recalling syringes in tree trunks and gangs patrolling the streets. “In 1982, the local church was occupied by the English Collective of Prostitutes for 12 straight days.” Then, in the early 2000s, a real estate developer had a dream and, well, “now it is the AI hotbed of the United Kingdom,” Kanji said. “What a change.” Around 18 months ago, his portfolio company BioCorteX moved from the neighborhood Holborn to the Jellicoe building in King’s Cross, hoping to be near the action. “Lots going on in London right now,” Nik Sharma, co-founder of BioCorteX, told me. “Lots of hyperscalers moving in.” That includes, reportedly, Jeff Bezos’ AI company Prometheus, which is also said to be in talks to move into the Jellicoe.
There are around 3,600 AI startups in London, which, together, have raised around .1 billion out of the .8 billion raised in the city since late July, according to Dealroom. Since the start of June, AI-related startups have leased more than 1 million square feet of office space in London, according to the real estate firm Knight Frank. With that, prime rents in King’s Cross have risen 18% over the past three years, Chris Dunn, a commercial insight associate at the firm, told me. That percentage represents only the largest leases encompassing at least 10,000 square feet, like the ones OpenAI and Prometheus are signing. The shorter deals go for even more, he said, and now the vacancy rate for conventional office space is just 0.9%. “Demand has outstripped supply,” he continued.
Today, one of the big topics of the area is sovereignty. It was a wake-up call for many when Anthropic shut off access to Mythos and Fable this summer, leaving some in the ecosystem to conclude: “We’d better look after ourselves,” Saul Klein, co-founder of the VC firm Phoenix Court, told me.
Phoenix Court is located in the King’s Cross area and has three portfolio companies in the vicinity, including Olix (which just announced a .3 billion valuation), Early Health and CoMind. Robin Klein, co-founder of the firm, said the shutdown of Fable and Mythos access was a “small but sharp reminder that Europe can’t simply rent its AI capabilities and capacity; it needs to build and hold some of its own.” King’s Cross, he said, is where much of this building is actually happening.
“The bigger question,” he continued, “is whether the U.K. builds the infrastructure, compute, energy, capital, to make this self-reliance durable, rather than just hosting outposts of U.S. labs.”
Image Credits:Phoenix Court
Top founders want to stay
Simon Kohl, founder of Latent Labs, has offices in King’s Cross and San Francisco. The London office, at the moment, is growing faster, and he’s more bullish than ever on the ecosystem, he said. “The mood right now feels less like London trying to catch up and more like London becoming one of the default places to start a serious AI company,” he said. Look around and you are likely to see Wayve testing its autonomous cars. Founded in 2017 by co-founder Alex Kendall, the unicorn is one of London’s biggest success stories.
“Ten years ago, building a frontier AI company from London felt like an unusual choice,” Kendall told me. “Now it feels like an obvious one.” Wayve moved into King’s Cross in 2018 looking for a space that could double as a garage — “a rare combination in Central London,” Kendall said. He has watched the ecosystem mature around him — and it’s now evident that a startup can stay in London, raise serious capital, hire world-class AI talent, and remain globally competitive, he said. Down the street from Anthropic’s new 158,000-square-foot office is the AI agent builder Sierra and the AI video platform Synthesia.
Laura Gonzalez Florez, Synthesia’s chief of staff and head of people, says the company moved into its glossy new office building a year ago to accommodate its growing team. They were drawn to the area for the same reason as everyone else: “It’s very close to the airport … very close to where a lot of investors are,” she said.
Image Credits:Synthesia
Around two-thirds of Synthesia’s engineers are remote, Gonzalez Florez said, letting the company tap into an affordable, international, and diverse talent pool and helping it scale faster. “From London, we can hire and work, without any problem, people from anywhere, from Slovenia to Portugal,” she said.
Unsurprisingly, London’s AI boom is also causing a talent war.U.K. AI job postings have skyrocketed in the past few years, per data from PwC. When Anthropic announced it moved into town earlier this year, it listed, for example, a salary range of £260,000 to £630,000 for a machine learning research engineer when the average salary in London for the same role is around £102,000. Some founders in the U.K., like those in Silicon Valley, are being forced to raise more and bigger rounds to keep up.
“The real test is whether more globally significant AI companies are founded, funded, and scaled from the U.K., while continuing to attract the world’s best talent to build them here,” Zain Ali, founder of the King’s Cross-based AI legal firm Centuro, told me. “If that continues to happen, King’s Cross won’t just be an AI hub. It’ll become one of the U.K.’s most important strategic assets.”
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#Thisformernotorious #redlight #districtis #nowone #worlds #top #hubs #TechCrunchUK This former notorious red-light district is now one of the world’s top AI hubs | TechCrunch
What every U.K. AI startup wants to know these days is, how can I get office space in King’s Cross?
The area is so hot that a VC firm allegedly recently won a deal by promising a founder office space in the neighborhood. “We stop at nothing to win deals [for] and to support” founders, “including helping them source office space when needed,” the firm told me when asked about the rumor, declining to confirm or deny any details.
The neighborhood’s popularity began back in 2016 when DeepMind — then newly acquired by Google — moved in. Soon after, a flood of AI startups followed, wanting to be around the Google DeepMind magic. Today, they hope to take advantage of the cluster of AI talent there.
This has transformed King’s Cross into one of the world’s top AI hubs, rivaled only by San Francisco and Beijing. Around London, it’s known by the sobriquet “Knowledge Quarter,” as it’s home to names like OpenAI, Meta, Isomorphic Labs, Cusp AI, Wayne, Recursive, and, a little farther down the road, Synthesia and Anthropic. The European Technology Network (ETN) just moved into a glossy new office nearby, while University College London sits around the corner.
Mixed in with the new developments are trendy food spots like Hoppers and BAO. Hop a train from King’s Cross, and founders can be in Cambridge in 45 minutes to source talent or can be in Paris in two hours to strike a deal.
Who would have guessed that a little more than 20 years ago, this was one of the seediest areas in London?
“In the ’80s, crack and heroin made the area a major narcotics market,” Hussein Kanji, an investor at Hoxton Ventures, said, recalling syringes in tree trunks and gangs patrolling the streets. “In 1982, the local church was occupied by the English Collective of Prostitutes for 12 straight days.” Then, in the early 2000s, a real estate developer had a dream and, well, “now it is the AI hotbed of the United Kingdom,” Kanji said. “What a change.” Around 18 months ago, his portfolio company BioCorteX moved from the neighborhood Holborn to the Jellicoe building in King’s Cross, hoping to be near the action. “Lots going on in London right now,” Nik Sharma, co-founder of BioCorteX, told me. “Lots of hyperscalers moving in.” That includes, reportedly, Jeff Bezos’ AI company Prometheus, which is also said to be in talks to move into the Jellicoe.
There are around 3,600 AI startups in London, which, together, have raised around .1 billion out of the .8 billion raised in the city since late July, according to Dealroom. Since the start of June, AI-related startups have leased more than 1 million square feet of office space in London, according to the real estate firm Knight Frank. With that, prime rents in King’s Cross have risen 18% over the past three years, Chris Dunn, a commercial insight associate at the firm, told me. That percentage represents only the largest leases encompassing at least 10,000 square feet, like the ones OpenAI and Prometheus are signing. The shorter deals go for even more, he said, and now the vacancy rate for conventional office space is just 0.9%. “Demand has outstripped supply,” he continued.
Today, one of the big topics of the area is sovereignty. It was a wake-up call for many when Anthropic shut off access to Mythos and Fable this summer, leaving some in the ecosystem to conclude: “We’d better look after ourselves,” Saul Klein, co-founder of the VC firm Phoenix Court, told me.
Phoenix Court is located in the King’s Cross area and has three portfolio companies in the vicinity, including Olix (which just announced a .3 billion valuation), Early Health and CoMind. Robin Klein, co-founder of the firm, said the shutdown of Fable and Mythos access was a “small but sharp reminder that Europe can’t simply rent its AI capabilities and capacity; it needs to build and hold some of its own.” King’s Cross, he said, is where much of this building is actually happening.
“The bigger question,” he continued, “is whether the U.K. builds the infrastructure, compute, energy, capital, to make this self-reliance durable, rather than just hosting outposts of U.S. labs.”
Image Credits:Phoenix Court
Top founders want to stay
Simon Kohl, founder of Latent Labs, has offices in King’s Cross and San Francisco. The London office, at the moment, is growing faster, and he’s more bullish than ever on the ecosystem, he said. “The mood right now feels less like London trying to catch up and more like London becoming one of the default places to start a serious AI company,” he said. Look around and you are likely to see Wayve testing its autonomous cars. Founded in 2017 by co-founder Alex Kendall, the unicorn is one of London’s biggest success stories.
“Ten years ago, building a frontier AI company from London felt like an unusual choice,” Kendall told me. “Now it feels like an obvious one.” Wayve moved into King’s Cross in 2018 looking for a space that could double as a garage — “a rare combination in Central London,” Kendall said. He has watched the ecosystem mature around him — and it’s now evident that a startup can stay in London, raise serious capital, hire world-class AI talent, and remain globally competitive, he said. Down the street from Anthropic’s new 158,000-square-foot office is the AI agent builder Sierra and the AI video platform Synthesia.
Laura Gonzalez Florez, Synthesia’s chief of staff and head of people, says the company moved into its glossy new office building a year ago to accommodate its growing team. They were drawn to the area for the same reason as everyone else: “It’s very close to the airport … very close to where a lot of investors are,” she said.
Image Credits:Synthesia
Around two-thirds of Synthesia’s engineers are remote, Gonzalez Florez said, letting the company tap into an affordable, international, and diverse talent pool and helping it scale faster. “From London, we can hire and work, without any problem, people from anywhere, from Slovenia to Portugal,” she said.
Unsurprisingly, London’s AI boom is also causing a talent war.U.K. AI job postings have skyrocketed in the past few years, per data from PwC. When Anthropic announced it moved into town earlier this year, it listed, for example, a salary range of £260,000 to £630,000 for a machine learning research engineer when the average salary in London for the same role is around £102,000. Some founders in the U.K., like those in Silicon Valley, are being forced to raise more and bigger rounds to keep up.
“The real test is whether more globally significant AI companies are founded, funded, and scaled from the U.K., while continuing to attract the world’s best talent to build them here,” Zain Ali, founder of the King’s Cross-based AI legal firm Centuro, told me. “If that continues to happen, King’s Cross won’t just be an AI hub. It’ll become one of the U.K.’s most important strategic assets.”
When you purchase through links in our articles, we may earn a small commission. This doesn’t affect our editorial independence.#Thisformernotorious #redlight #districtis #nowone #worlds #top #hubs #TechCrunchUK](https://techcrunch.com/wp-content/uploads/2026/08/DM9A2852.jpg?w=680)

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