Abstract: A validator device for a passenger transportation system includes a reader module configured to detect an electronic medium identifier of an open payment ticket medium. Data memory of the validator device stores a denial data set containing at least one denied electronic medium identifier and at least one denial attribute assigned to the denied electronic medium identifier. A comparator module identifies a denied electronic medium identifier from the at least one denied electronic medium identifier contained in the denial data set by comparing the detected electronic medium identifier with the at least one denied electronic medium identifier. A verification module checks, upon identification of a denied electronic medium identifier, whether the at least one denial attribute assigned to the identified denied electronic medium identifier satisfies predetermined denial criterion.

Abstract: A backend system for a passenger transport system includes: data memory for storing at least one user data set containing at least one electronic medium identifier authorizing the execution of a transport trip and at least one first transport usage condition linked to the electronic medium identifier; a receiving module configured to receive a change data set containing at least one second transport usage condition, at least one first time date and at least one user identifier for identifying a stored user data set; a change module configured to change the linkage between the electronic medium identifier stored in the identified user data set and the first transport usage condition for at least one future transport trip; a trip reconstruction module configured to reconstruct an executed transport trip at least based on a received user identifier; and a generation module configured to generate a billing data set.

Abstract: A validation device for a ticketing system having at least one first short-range interface that is configured to receive at least one inspection identifier stored in an inspection element, at least one authentication module configured to verify the authenticity of the received inspection identifier, and at least one key module configured to provide a communication dataset to a second short-range interface in the case of a positive authentication result, such that the communication dataset is receivable by the inspection element via the first short-range interface and/or an additional interface of the validator device.

Abstract: A validation device for a ticketing system having at least one first short-range interface that is configured to receive at least one inspection identifier stored in an inspection element, at least one authentication module configured to verify the authenticity of the received inspection identifier, and at least one key module configured to provide a communication dataset to a second short-range interface in the case of a positive authentication result, such that the communication dataset is receivable by the inspection element via the first short-range interface and/or an additional interface of the validator device.