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A photo illustration of what aerial drones using 3D mapping might look like. Credit: NextNav

Digital maps are getting better every day, making turn-by-turn navigation more accurate, with real-time details. Adding a third dimension to mapping — altitude — is the next breakthrough.

Why it matters: Satellite-based GPS maps are critical to modern life but have their limitations. They don't work well indoors or in urban areas, and they aren't secure.

  • 3D maps could improve location accuracy by telling a delivery person — or emergency responder — what floor you're on, for example, or by locating your car in a multistory garage.
  • Drones will also need 3D maps to navigate between tall buildings.
  • As the physical and virtual worlds collide through augmented reality, 3D geolocation will become increasingly important.

What's happening: NextNav, based in Sunnyvale, California, is among the companies working on the next generation of 3D mapping.

  • Its Pinnacle vertical location service is available in more than 4,400 cities across the U.S. — covering 90% of multistory buildings in America, according to the company.

How it works: NextNav's tech leverages the barometric sensors already available in smartphones, tablets and other devices to determine "floor-level" altitude within three meters.

  • Companies can integrate NextNav's tech into existing apps, enabling communication with its proprietary network of altitude sensors.

"Think of us as the blue dot that goes hand in hand with mapping," CEO Ganesh Pattabiraman tells Axios.

  • "Today's blue dot comes from GPS and some Wi-Fi. But it's not reliable enough. What we bring is a blue dot, which is based on a land-based device that transmits an encrypted GPS-like signal, which is so much stronger than GPS."
  • Among the companies that NextNav is working with is Joby, a leading contender in the nascent market for flying taxis.

What's next: NexNav recently announced plans to go public by merging with a special purpose acquisition company called Spartacus Acquisition Corporation.

  • The deal is expected to raise $408 million for further technology expansion.

Go deeper

Tina Reed, author of Vitals
6 mins ago - Health

Study finds bias against Black patients written into medical charts

Illustration: Sarah Grillo/Axios

Black patients were more than two-and-a-half times as likely as white patients to have negative descriptors about them in their electronic health record, according to a study published Wednesday in Health Affairs.

Why it matters: The study is further evidence of bias in the U.S. health care system, which can ultimately result in worse care and disparately poor outcomes.

Jan. 6 panel asks Ivanka Trump to cooperate with investigation

Former President Trump and daughter Ivanka Trump walk to Marine One on the South Lawn of the White House on January 4, 2020 in Washington, DC. Photo: Drew Angerer/Getty Images

The House select committee investigating the Jan. 6 Capitol riot sent a letter Thursday to Ivanka Trump requesting her cooperation with the investigation.

Driving the news: "We write to request your voluntary cooperation with our investigation on a range of critical topics," the chair wrote in a letter to the former president's daughter.

1 hour ago - World

Putin is challenging Ukraine's "right to exist," Blinken says

Blinken (L) speaks in Berlin on Thursday. Photo: Kay Nietfeld - Pool/Getty

Secretary of State Tony Blinken put the stakes of a Russian invasion of Ukraine in stark terms on Thursday, saying Vladimir Putin's threat is a direct challenge to Ukraine's "right to exist" as an independent country and a democracy.

What he's saying: “There’s been a lot of speculation about President Putin’s true intentions, but we don’t actually have to guess. He’s told us, repeatedly. He’s laying the groundwork for an invasion because he doesn’t believe Ukraine is a sovereign nation," Blinken said during a speech in Berlin.