Video surveillance unit, for short

• Cloak-and-dagger gadget
• Miniature surveillance gadget
• Surveillance aid
• Cloak-and-dagger device
• Bad news for a bad nanny
• Surveillance device
• Wireless apparatus
• Cuckold's purchase, perhaps

Wiktionary Word definitions in Wiktionary
n. A camera, especially a webcam, used for covert surveillance.