A method for the location-accurate detection along a conveying direction of an object (320; 820) conveyed relative to a sensor (300; 800) in the conveying direction comprising the steps of: - conveying the object (320; 820) through a detection region of the sensor (300; 800) and repeatedly performing the following steps at a current object position in the conveying direction during the conveying: - generating transmitted light (322; 822) consisting of three transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3) which are arranged or directed in such a way that they hit the object (320; 820) at three positions spaced apart in conveying direction so that when conveying the object (320; 820) the object (320; 820) is first struck by the first (322-1; 822-1), then by the second (322-2; 822-2) and finally by the third (322-3; 822-3) transmission light beam, - reflecting the transmitted light (322; 822) at the conveyed object (320; 820) or, in the absence of the object (320; 820), optionally at a background, - detecting the reflections of the light associated with the transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3) as receiving light spots (318-1, 318-2, 318-2; 818-1, 818-2; 818-3) and generating with at least one receiver (314; 814) first reception signals (610; 710; 1210, 1220; 1410, 1420; 1610, 1620), second reception signals (612; 712; 1212, 1222; 1412, 1422; 1612, 1622) and third reception signals (614; 714; 1214, 1224; 1414, 1424; 1614, 1626) correlated to the transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3), respectively, - combining the first and third received signals (610 and 614; 710 and 714; 1210 and 1214, 1220 and 1224) to form a combination result (616; 716; 1216, 1226, 1310; 1510; 1710), - comparing the combination result (616; 716; 1216, 1226, 1310; 1510; 1710) with the second received signal (612; 712) or a value (1312; 1512; 1712) derived from the second received signal (1212, 1222; 1412, 1422; 1612, 1622) to form a comparison result, - output of an object detection signal if the comparison result exceeds or falls below a threshold value. - conveying the object (320; 820) through a detection region of the sensor (300; 800) and repeatedly performing the following steps at a current object position in the conveying direction during the conveying: - generating transmitted light (322; 822) consisting of three transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3) which are arranged or directed in such a way that they hit the object (320; 820) at three positions spaced apart in conveying direction so that when conveying the object (320; 820) the object (320; 820) is first struck by the first (322-1; 822-1), then by the second (322-2; 822-2) and finally by the third (322-3; 822-3) transmission light beam, - reflecting the transmitted light (322; 822) at the conveyed object (320; 820) or, in the absence of the object (320; 820), optionally at a background, - detecting the reflections of the light associated with the transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3) as receiving light spots (318-1, 318-2, 318-2; 818-1, 818-2; 818-3) and generating with at least one receiver (314; 814) first reception signals (610; 710; 1210, 1220; 1410, 1420; 1610, 1620), second reception signals (612; 712; 1212, 1222; 1412, 1422; 1612, 1622) and third reception signals (614; 714; 1214, 1224; 1414, 1424; 1614, 1626) correlated to the transmitted light beams (322-1, 322-2, 322-3; 822-1, 822-2, 822-3), respectively, - combining the first and third received signals (610 and 614; 710 and 714; 1210 and 1214, 1220 and 1224) to form a combination result (616; 716; 1216, 1226, 1310; 1510; 1710), - comparing the combination result (616; 716; 1216, 1226, 1310; 1510; 1710) with the second received signal (612; 712) or a value (1312; 1512; 1712) derived from the second received signal (1212, 1222; 1412, 1422; 1612, 1622) to form a comparison result, - output of an object detection signal if the comparison result exceeds or falls below a threshold value.