The privacy-first sensor company measuring how the built world is actually used.
DENSITY — the company's angular mark, sculpted in pigment. The image doubles as the firm's calling card: measurement as something you can almost see move.
Photo: Density Inc.
Andrew Farah was tired of walking into his favorite coffee shop in Syracuse, New York, only to find it packed one afternoon and deserted the next. Most people would grumble and leave. Farah, an engineer, asked a harder question: why does nobody actually know how full a room is? In 2014 he turned that annoyance into a company. More than a decade later, Density measures how people move through an estimated billion-plus square feet of offices, lounges, libraries, and lobbies - without ever pointing a camera at them.
Density sells sensors the size of a mint tin and the software that makes their data legible. Its customers are among the largest companies in the world, and its pitch is deceptively plain: you cannot optimize a building you cannot measure. In an era of half-empty offices and expensive leases, that plain idea turned into a business valued at more than a billion dollars.
The core problem is old and stubborn: how do you know how a space is used?
Density builds hardware and software that measure occupancy in real time. Its sensors detect that a person is present - entering a doorway, sitting at a desk, filling a meeting room - and feed that signal into an analytics platform called Atlas. The result is a live, anonymous picture of how a building actually gets used, as opposed to how anyone assumed it did.
The deliberate design choice at the center of the company is what it refuses to do. Density does not use cameras or facial recognition. Its sensors rely on radar and depth sensing, so the system knows a body is there but not whose body it is. That is not a feature bolted on for compliance. It is the reason many privacy-conscious enterprises will put the hardware in their buildings at all.
Commercial real estate is one of the largest and least-understood costs on a corporate balance sheet. Leases are signed for space that may sit empty half the week. Return-to-office debates are waged on anecdote. Cleaning crews service rooms nobody entered. Density's data turns those guesses into numbers: which floors are used, when, and by how many people - so companies can right-size leases, plan hybrid schedules, and design offices around evidence.
“Maximize the value of every square foot.”Density's stated mission
Density's line splits into hardware that senses and software that interprets.
A radar sensor that anonymously measures occupancy across open spaces - meeting rooms, desk neighborhoods, and large floors - with close-proximity detection and coverage up to 20 feet high. Long Range and Short Range variants can cut measurement cost by up to 51%.
Launched 2024The doorway sensor that started it all - counting people as they cross a threshold. An Entry Long Range option handles wider and more complex entryways.
Since 2015The analytics platform. Atlas 2.0 turns raw sensor signals into occupancy trends, heatmaps, observations, and portfolio-scale reporting, syncing with tools like SerraView to keep space names and capacities current.
Atlas 2.0, 2022–24A space allocation, management, and reservation system - acquired in 2024 to extend Density from measuring space into helping teams book and manage it.
Acquired 2024Technology that builds an accurate digital twin of a physical space, enabling efficient planning and design. Acquired alongside the Series D.
Acquired 2021Advisory services that help real estate and workplace teams read their utilization data - and decide what to actually do with it.
OngoingDensity runs a B2B hardware-plus-SaaS model. It sells its proprietary sensors and layers recurring Atlas software subscriptions on top, typically to enterprise real estate, workplace, and facilities teams. Revenue blends sensor deployments with per-space or portfolio software fees - hardware gets it in the door, software keeps it there.
Density sits in the workplace-analytics and occupancy-intelligence category, a slice of proptech that swelled when hybrid work forced companies to re-examine every lease. It reported 500%+ growth after March 2020. Its wider thesis reaches further: buildings account for roughly 39% of global CO2 emissions, and you cannot cut what you do not measure.
The occupancy-sensor field is crowded - and split by sensing philosophy. Each vendor makes a different bet about the tradeoff between accuracy and privacy.
Illustrative comparison of sensing approach, not market share. Density's differentiators: anonymous-by-design radar/depth sensing and hardware designed and manufactured in the United States.
Density's customers skew large and space-heavy - the organizations for whom a percentage point of utilization is real money.
Beyond corporate offices, the technology has been deployed in universities, libraries, government buildings, and Delta's airport lounges. Density has said it manages occupancy data across roughly 1 to 1.25 billion square feet of commercial real estate spread across dozens of countries.
Andrew Farah founds Density in May, initially to predict whether a business like a coffee shop is busy.
Density introduces a small doorway sensor that counts people entering and exiting a space.
The shift to hybrid work drives a reported 500%+ surge in demand for occupancy measurement.
Density raises $125M led by Kleiner Perkins at a $1.05B valuation and acquires digital-twin maker HELIX RE.
Density expands Atlas for scaled portfolio deployments, deepening the software side of the business.
Density ships radar-based Open Area sensors that cut measurement cost by up to 51% and acquires space-reservation system Nashi.
The idea was born from a coffee-shop grievance in Syracuse, NY - a room that was somehow always full or always empty.
An early Density sensor was famously described as roughly the size of an Altoids mint tin.
Density counts bodies, not faces - radar and depth sensing mean it never captures who you are.
The company designs and manufactures its hardware in the United States, citing IP protection and quality control.
Andrew Farah on sensors, city-scale data, and the case for privacy-first measurement.
Density builds sensors and software that measure how physical spaces - especially offices - are used in real time, helping organizations optimize their real estate and workplace strategy.
No. Density uses radar and depth sensors to count people anonymously. It detects that a person is present without capturing images, faces, or personal identities.
Density was founded in May 2014 by Andrew Farah, who serves as CEO. The idea grew from his frustration at not knowing whether his favorite coffee shop was busy.
Density has raised more than $225 million, including a $125 million Series D in November 2021 led by Kleiner Perkins that valued the company at $1.05 billion.
Large enterprises and institutions, including Fortune 500 companies such as Okta, Marriott, Stripe, Coca-Cola, ExxonMobil, and BlackRock, along with universities, libraries, and government buildings across 30+ countries.