LAS VEGAS (AP) — Once a hidden and under-the-radar topic, privacy is getting more attention at the CES gadget show in Las Vegas this week. Startups now volunteer information about how they're securing your data and protecting your privacy when you use their heart rate monitor or cuddly robot.

Roybi, an alien-looking robot that teaches kids languages and other skills, has a camera with facial recognition that can remember children and guess whether the kid was excited or sad after a lesson. Roybi says it uses that information to make changes to its lessons.

But the $199 robot also comes with a...