AXIS FA1125 sensor unit has a pinhole lens for extremely discreet surveillance. You can install it indoors - in a wall, doorway, ceiling, metal panel, or any tight places such as in a machine. It virtually disappears from view, with only a small pin hole visible externally. Installed at eye level at entrances or exits of retail stores or banks, it's ideal for capturing perfect face shots - even when a person is wearing a hat or hood. It's also perfect for highly discreet installation in an ATM (automated teller machine) or vending machine.