Biometric sensor array

From The Stargate Omnipedia

Biometricsensorarrayancient.jpg

Console removed from storage in Atlantis, designed to detect life signs inside the city's perimeter. The device can be an early warning system if Wraith life signs are detected.

KEY EPISODE

Sanctuary - Dr. Grodin announces that a biometric sensor array has been pulled from storage, and is surprised to discover Chaya Sar activating it by a simple touch.