Abstract: A self-service terminal (SST) comprises: a data capture device (16); an emitter (34); a detector (40); and an arrangement (44,48) for producing an alarm signal if the detector (40) fails to receive emissions from the emitter (34). The data capture device (16), the emitter (34) and the detector (40) are arranged such that an object (21) in the vicinity of the data capture device (16) will obstruct the path of emissions from the emitter (34) to the detector (40).

Abstract: An indicator device (14) having no moving parts includes a layered assembly (26) visible through an aperture (28) in a wall member (30), and a light source (30) positioned behind the layered assembly (26). The layered assembly (26) comprises a first transparent sheet (32) of a first color, a second transparent sheet (34) of a second color, and an LCD panel (36) interposed between the two sheets (32,34). The LCD panel (36) is adapted to be rendered transparent when energized and to be rendered opaque when de-energized. When the LCD panel (36) and the light source (38) are de-energized, the first color (e.g. red) is seen through the aperture (28), and when the LCD panel (36) and the light source (38) are energized a third color (e.g. green) is seen through the aperture (28). The indicator device (14) may be used, for example, as an in-service indicator of an ATM.