Brangelina beware. The paparazzi of Splash News are coming for you and you'll never see them coming.

Gary Morgan, chief executive of the celebrity-photo agency, said he'd like to be buzzing his quarry soon with silent, miniature drones mounted with tiny cameras. No more harassment from helicopters hovering in the Hollywood Hills.

"It would strike fear in the hearts of every celebrity having a birthday party," Mr. Morgan said. "Call it C3paparazzo," after the robot in Star Wars.

Personal drones aren't yet plying U.S. flyways. But an arms race is building among people looking to track celebrities, unfaithful lovers or even wildlife. Some organizations would like them for emergency operations in areas hit by natural disasters. Several efforts to develop personal drones are scheduled for completion in the next year.

"If the Israelis can use them to find terrorists, certainly a husband is going to be able to track a wife who goes out at 11 o'clock at night and follow her," said New York divorce lawyer Raoul Felder.