A concealed recorder or transmitter worn by an informant or undercover officer to gather evidence.
According to Crypto Museum, this is American slang.1
Sources
- Crypto Museum, Glossary of covert expressions
Checked: 3 November 2026
A concealed recorder or transmitter worn by an informant or undercover officer to gather evidence.
According to Crypto Museum, this is American slang.1
Checked: 3 November 2026