Google, Amazon and Wal-Mart have joined the government’s task force charged with figuring out a registration and identification system for drones.

The companies, all three of which are working on drone delivery systems, are among 25 members that have been asked to formulate recommendations by Nov. 20 on how such a registration system would work and what types of drones should be exempt. Their work will begin with a three-day meeting next week.

Unlike aircraft, drones are not subject to any registration process, but a rapid increase in the number of drones involved in dangerous incidents has prompted the Federal Aviation Administration and the U.S. Department of Transportation to act. With registration and identification, it’s hoped airspace violators will be easier to identify and prosecute.

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