Method for providing a velocity correction of a luminescence time constant of a value document in a sensor which is configured for measuring a change over time in a luminescence of the value document while the respective value document is transported past the sensor, and which is configured for determining the luminescence time constant of the respective value document on the basis of the measured change over time in the luminescence and for verifying the luminescence of the respective value document, comprising the following steps: a) determining at least one sensor-specific parameter (K, a, d) on the basis of a measurement at the sensor or on the basis of a measurement with the aid of the sensor, b) storing the at least one sensor-specific parameter (K, a, d) in the sensor, c) providing a velocity correction, which, during the verification of the luminescence of a value document transported past the sensor at a verification transport velocity (vP), is usable for correcting a luminescence time constant (t(vP)) determined for the respective value document, in a correction device of the sensor, wherein the correction device, for the velocity correction of the luminescence time constant (t(vP)) of the respective value document, is configured - on the basis of the at least one sensor-specific parameter (K, a, d) stored in the sensor and by means of information made available in the sensor regarding the verification transport velocity (vP) of the value document, to determine a sensor-specific correction factor (K(vP)) which is applicable to the verification transport velocity (vP) of the value document to be verified in each case, and - to correct the luminescence time constant (t(vP)) determined for the value document with the aid of the sensor-specific correction factor (K(vP)) applicable to the verification transport velocity (vP) of the value document in order to determine a corrected luminescence time constant (t*(vP) for the value document, wherein the sensor is designed to verify the luminescence of the respective value document on the basis of the corrected luminescence time constant (t*(vP)). a) determining at least one sensor-specific parameter (K, a, d) on the basis of a measurement at the sensor or on the basis of a measurement with the aid of the sensor, b) storing the at least one sensor-specific parameter (K, a, d) in the sensor, c) providing a velocity correction, which, during the verification of the luminescence of a value document transported past the sensor at a verification transport velocity (vP), is usable for correcting a luminescence time constant (t(vP)) determined for the respective value document, in a correction device of the sensor, wherein the correction device, for the velocity correction of the luminescence time constant (t(vP)) of the respective value document, is configured - on the basis of the at least one sensor-specific parameter (K, a, d) stored in the sensor and by means of information made available in the sensor regarding the verification transport velocity (vP) of the value document, to determine a sensor-specific correction factor (K(vP)) which is applicable to the verification transport velocity (vP) of the value document to be verified in each case, and - to correct the luminescence time constant (t(vP)) determined for the value document with the aid of the sensor-specific correction factor (K(vP)) applicable to the verification transport velocity (vP) of the value document in order to determine a corrected luminescence time constant (t*(vP) for the value document, - on the basis of the at least one sensor-specific parameter (K, a, d) stored in the sensor and by means of information made available in the sensor regarding the verification transport velocity (vP) of the value document, to determine a sensor-specific correction factor (K(vP)) which is applicable to the verification transport velocity (vP) of the value document to be verified in each case, and - to correct the luminescence time constant (t(vP)) determined for the value document with the aid of the sensor-specific correction factor (K(vP)) applicable to the verification transport velocity (vP) of the value document in order to determine a corrected luminescence time constant (t*(vP) for the value document,