CBS News correspondent David Pogue investigated whether smartphones are listening to users' conversations to deliver targeted advertisements, addressing widespread consumer concerns about digital privacy.

The investigation focused on instances where users report seeing advertisements for products shortly after mentioning them in conversation, leading to suspicions that their devices are actively monitoring their speech for advertising purposes.

Pogue examined the technical aspects of highly-targeted advertising and explored why some advertisements appear to be unusually specific to users' recent conversations or interests. The report aimed to separate fact from speculation regarding smartphone listening capabilities.

The investigation comes amid growing public awareness and concern about data privacy practices by technology companies and advertisers. Many smartphone users have reported experiencing what they perceive as evidence of audio surveillance when targeted ads appear for products they recently discussed verbally.

The CBS report sought to provide factual information about how targeted advertising systems actually work and whether claims about smartphone eavesdropping are supported by evidence.