The Download: Flock's new rules, cloning's future, and children's cells

Plus: Ukrainian drones defeated US forces in a military exercise. The police-tech giant Flock is changing officers' access to its nationwide network of license plate readers. The move comes amid a backlash over mass surveillance and reports of officers using the technology to stalk and harass current or former romantic partners. To combat that, the company will require them to enter a criminal case number before searching its database and expand automated auditing of suspicious searches. But because Flock won't verify those case numbers, officers could still find ways around the safeguards. Here's what Flock is changing--and where loopholes remain .