Abstract: A sensing system to process at least one valuable document is described herein. The system includes a light source to generate a light beam. The system also includes at least one light pipe having one or more diverting surfaces to direct the light beam at a predetermined angle of incidence onto the valuable document. At least one reflective surface, to receive a first portion of the light beam transmitted through the valuable document and to reflect off the first portion of the light beam towards the valuable document, is included. A light detector is configured to receive at least a second portion of the light beam re-transmitted through the valuable document.

Abstract: A gate assembly can include a housing, a main body, at least one member, and an activation rib. The housing can define at least a portion of a card path of a payment interface. The main body can be coupled to the housing and can be movable between a closed position and an open position. The at least one member can extend from the main body such that, when the main body is in the closed position, the at least one member extends into the card path and can be oriented to inhibit an item from traveling through the card path. The activation rib can extend from the main body and can be located such that, when the main body is in the closed position, the activation rib extends into the card path. Related apparatus, systems, techniques, and articles are also described.

Abstract: A sensing system to process at least one valuable document is described herein. The system includes a light source to generate a light beam. The system also includes at least one light pipe having one or more diverting surfaces to direct the light beam at a predetermined angle of incidence onto the valuable document. At least one reflective surface, to receive a first portion of the light beam transmitted through the valuable document and to reflect off the first portion of the light beam towards the valuable document, is included. A light detector is configured to receive at least a second portion of the light beam re-transmitted through the valuable document.

Abstract: A gate assembly can include a housing, a main body, at least one member, and an activation rib. The housing can define at least a portion of a card path of a payment interface. The main body can be coupled to the housing and can be movable between a closed position and an open position. The at least one member can extend from the main body such that, when the main body is in the closed position, the at least one member extends into the card path and can be oriented to inhibit an item from traveling through the card path. The activation rib can extend from the main body and can be located such that, when the main body is in the closed position, the activation rib extends into the card path. Related apparatus, systems, techniques, and articles are also described.