LOS ANGELES -- Daniel Garate's career came crashing to earth a few weeks ago. That's when the Los Angeles Police Department warned local real estate agents not to hire photographers like Garate, who was helping sell luxury property by using a drone to shoot sumptuous aerial movies. Flying drones for commercial purposes, the police said, violated federal aviation rules.
"I was paying the bills with this," said Garate, who recently gave an unpaid demonstration of his drone in suburban Woodland Hills.
His career will soon get back on track. A new federal law, signed by President Barack Obama on Tuesday, compels the Federal Aviation Administration to allow drones to be used for all sorts of commercial endeavors -- from selling real estate and dusting crops, to monitoring oil spills and wildlife, even shooting Hollywood films. Local police and emergency services will also be freer to send up their own drones.
But while businesses, and drone manufacturers especially, are celebrating the opening of the skies to these unmanned aerial vehicles, the law raises fresh worries about how much detail the drones will capture about lives down below -- and what will be done with that information. Safety concerns such as midair collisions and property damage on the ground are also an issue.
U.S. courts have generally permitted surveillance of private property from public airspace. But scholars of privacy law expect that the likely proliferation of
"As privacy law stands today, you don't have a reasonable expectation of privacy while out in public, nor almost anywhere visible from a public vantage," said Ryan Calo, director of privacy and robotics at the Center for Internet and Society at Stanford University. "I don't think this doctrine makes sense, and I think the widespread availability of drones will drive home why to lawmakers, courts and the public."
Some questions likely to come up: Can a drone flying over a house pick up heat from a lamp used to grow marijuana inside, or take pictures from outside someone's third-floor fire escape? Can images taken from a drone be sold to a third party, and how long can they be kept?
Drone proponents say the privacy concerns are overblown. Randy McDaniel, chief deputy of the Montgomery County Sheriff's Department in Conroe, Texas, near Houston, whose agency purchased a drone to use for various law-enforcement operations, dismissed worries about surveillance, saying everyone everywhere can be photographed with cellphone cameras anyway.
"We don't spy on people," he said. "We worry about criminal elements."
Still, the American Civil Liberties Union and other advocacy groups are calling for new protections against what the ACLU has said could be "routine aerial surveillance of American life."
For drone makers, the change in the law comes at a particularly good time. With the winding down of the war in Afghanistan, where drones have been used to gather intelligence and fire missiles, these manufacturers have been awaiting lucrative new opportunities at home.
The market for drones is valued at $5.9 billion and is expected to double in the next decade, according to industry figures. Drones can cost millions of dollars for the most sophisticated varieties to as little as $300 for one that can be piloted from an iPhone.
"We see a huge potential market," said Ben Gielow of the Association for Unmanned Vehicle Systems International, a drone maker trade group.
The Montgomery County Sheriff's Department in Texas bought its 50-pound drone in October from Vanguard Defense Industries, a company founded by Michael Buscher, who built drones for the Army, and then sold them to an oil company whose ships were threatened by pirates in the Gulf of Aden.
The company custom-built the drone, which takes pictures by day and senses heat sources at night. It cost $300,000, a fraction of the cost of a helicopter.
McDaniel said his SWAT team could use it for reconnaissance, or to manage road traffic after a big accident. He said he regretted that he didn't have it a few months ago to search for a missing person in a densely wooded area.
Buscher, meanwhile, said he was negotiating with several police agencies.
"There is tremendous potential," he said. "We see agencies dipping their toes."
Garate, for now, plans to work mainly in his native Peru, where he has used his drone to shoot commercials for banks. He said he was approached by paparazzi last year about filming reality television star Kim Kardashian's wedding using a drone, but turned down the offer.
"Maybe the FAA should give a driver's license for this, with a flight test," he said. "Do a background check to make sure I'm not a terrorist."