He reads a brake-tap the way a detective reads a fingerprint - and built a car insurer on the difference between recklessness and good reflexes.
Open the Just app and there is no plug-in dongle, no installer waiting in your driveway, no monthly bill that arrives whether you drove or not. There is your phone, your odometer, and a number that moves every thirty days based on a single question: how did you actually drive? Speed, cornering, braking, junctions, distractions, road conditions - all of it folds into a personal rating Just calls ScoreSafe. Liability-only customers pay purely per mile. Park the car for a month and you owe close to nothing.
That is the whole argument Robert Smithson has been making since 2019, and it is a quietly radical one. Traditional auto insurers lean on credit scores and zip codes - proxies that correlate with risk but punish people for who they are rather than how they behave. Smithson's company prices the behavior directly. The result, he says, is that some Just customers have paid up to 80% less than they would with a legacy carrier. Drive 3,000 miles on the platform and Just fades the weight of your credit score to zero.
Technology now allows us to do better, to price people on how they drive, not who they are.
Robert SmithsonSmithson is fond of saying that a sudden brake could mean recklessness or responsibility - it depends on why it happened. Slamming the pedal because you were texting is one story. Slamming it because a child stepped off a curb is the opposite. The data point is identical; the meaning is not. This is where his philosophy degree from Cambridge stops being a cocktail-party detail and starts looking like a business model. Risk, in his telling, is not a number you eliminate. It is a text you learn to read better than your competitors.
There's so much information hidden in plain sight. The challenge is learning how to interpret it.
Robert SmithsonHe came to that conviction the hard way, through data. Before Just, Smithson built Genius Sports, a company that used live data to understand and predict sports performance. It sold for $280 million in 2018. He also founded PythonAnywhere, a developer platform that let people run Python in the browser. Earlier still he was a fund manager - investment director at the Swiss asset firm GAM, a partner at THS Partners and Arete Research in the UK. The throughline across all of it is a suspicion of tidy correlations and a respect for context. As he puts it: sports analytics taught him that data without context is dangerous.
The founding insight was almost contrarian. When telematics first arrived, the obvious customers looked like gadget-loving safe drivers who wanted a discount. Smithson saw the opposite. The people who stood to gain most were lower-income drivers - the ones living in zip codes that legacy models flag as expensive, carrying credit scores that have nothing to do with how carefully they merge. Just was founded in Los Angeles in 2019 with co-founders Murray Macdonald and Gregory Lyons, and it launched its telematics product in Arizona in 2020. Two of the founders had lost loved ones in road accidents, which is why the company frames its mission as two things at once: fairer prices and safer roads.
Credit scores and zip codes may correlate with risk, but they create unfairness.
Robert SmithsonThe economics seem to back the thesis. In 2020 Just reported a direct loss ratio of 65.8% against rival Root's 82% - the kind of gap that suggests the pricing is genuinely sharper, not just cheaper. During one stretch in 2021 the company posted roughly 1,400% revenue growth in a single quarter as it scaled across Arizona, then layered full coverage on top of its liability product and raised an $8 million round that brought total funding to $15.3 million. By mid-2022 Just had raised what was reported as a Series A, pushing cumulative funding toward $28.85 million.
Smithson has a knack for noticing when a market's assumptions have quietly expired. When work-from-home gutted commute mileage, he pointed out the obvious thing the incumbents were slow to price: people are simply driving less, and that isn't changing anytime soon. A model built to charge by the mile doesn't need a renewal cycle to catch up - it adjusts the very next month. The per-mile price a customer gets can change every thirty days, which means Just can reward improving drivers almost in real time and nudge the careless ones in the other direction.
In a $300-billion market, accuracy beats size. If you understand risk better, you can price better.
Robert SmithsonIt is a David-and-Goliath framing, and he leans into it. He is not trying to out-spend State Farm. He is betting that whoever measures risk most precisely wins, and that a small company with better instruments can carve a defensible wedge out of an enormous, slow-moving industry. Insurance, he notes with some irony, is the most data-driven profession of all - it was just slow to recognize change.
For a founder this quantitative, Smithson's management philosophy is strikingly loose. He says micromanagement kills creativity, that he hires exceptional people and gives them space to experiment. He treats entrepreneurship itself as a probability exercise - balancing bold vision against disciplined execution - and warns against the classic founder trap: people overestimate what they can do in a year and underestimate what they can do in ten. It is the patience of someone who has already built and sold one data company and knows the second act takes longer than the pitch deck suggests.
Away from the dashboard, he flies planes and reads detective novels - which, if you have followed the brake-tap logic this far, is not a coincidence so much as a tell. The whole company runs on the idea that the truth about how you drive is sitting there in plain sight, waiting for someone patient enough to interpret it. Smithson has spent a career doing exactly that with sports, with code, and now with the most ordinary thing in American life: the daily commute.
There is also a deliberate restraint in how he picks fights. He has been candid that Just is not racing to plant a flag in every state at once. The careful sequence - Arizona first, telematics proven, full coverage layered on, then the slow widening into new markets - mirrors the same conviction that animates the pricing engine: get the measurement right before you scale the mistake. A model that adjusts every thirty days is forgiving of small errors and merciless to large ones, and Smithson seems to run the company the way the app runs a policy, correcting in small increments rather than betting the book on a single grand expansion.
His ambition from here is unglamorous and concrete - widen the map. More states, more drivers scored on conduct instead of demographics, more proof that fair pricing and a profitable book are the same project, not competing ones. If he is right, the dongle-free meter in your pocket is less a gadget than a small argument about justice, dressed up as an insurance app.
Investment director at Swiss asset manager GAM; partner at THS Partners and Arete Research in the UK.
Founds PythonAnywhere, a browser-based Python platform, and Genius Sports, a live sports-data company.
Genius Sports sells for $280 million.
Founds Just in Los Angeles with Murray Macdonald and Gregory Lyons - mission: fairer prices, safer roads.
Just launches its telematics pay-per-mile product in Arizona.
Adds full coverage in Arizona; raises $8M, bringing total to $15.3M; posts ~1,400% revenue growth in a quarter.
Reported Series A round; cumulative funding climbs toward ~$28.85M.
The key isn't to eliminate risk, but to measure it better than anyone else.
A sudden brake could mean recklessness or responsibility; it depends on why it happened.
Sports analytics taught me that data without context is dangerous.
Insurance is the most data-driven profession of all, but it was slow to recognize change.
Micromanagement kills creativity. I hire exceptional people and give them space to experiment.
Most people overestimate what they can do in a year and underestimate what they can do in ten.
Philosophy, not finance. He read philosophy at Cambridge before pricing risk for a living - the brake-tap question is basically epistemology with a steering wheel.
No dongle required. Just reads driving straight from the smartphone. Your pocket is the meter; your habits are the rate.
Pay only for the miles. Liability-only drivers carry no monthly fee - park the car, owe almost nothing.
Personal stakes. Two founders lost loved ones to road accidents, which is why safety sits beside savings in the mission.
Serial builder. A Python developer platform, a $280M sports-data firm, and now an insurer - same instinct, different freeway.
Off the clock. He flies planes and reads detective fiction. Both, suspiciously, are about reading clues correctly.