The Japanese-owned firm has drafted in the public affairs support as the Government places increasing emphasis on the technology as a means of tackling terrorism.
Ministers are keen to see biometric screening of passengers as they check in and out of airports - so that terrorist suspects can be identified and stopped. The Government's controversial identity card programme also relies heavily on biometric technology and there are plans to extend the use of biometric visas.
Meanwhile, last month it emerged that the United States is talking to Britain and other countries about participating in a security database to share biometric data on terrorists and criminals.
NEC's biometric solutions include fingerprint, iris and palm identification and authentication. Burson-Marsteller is believed to have landed the account earlier this month without a competitive pitch.
The agency's public affairs MD Rhoda MacDonald said she was ‘not in a position to talk' about the brief. The NEC press office failed to return numerous calls.