Method for monitoring an elevator car by means of at least one optical sensor, wherein the at least one optical sensor detects image data in a monitoring region of the elevator car, wherein the detected image data are transmitted by way of a first data connection to an evaluation device arranged in the elevator car, characterized in that in the evaluation device the detected image data are compared with at least one reference image of the monitoring region in order to carry out the following steps: - detecting the entrance of objects into the monitoring region and at least one recognition feature for each detected object, wherein a data object for each detected object is activated in a data memory and the at least one recognition feature is stored in the data object; - detecting the departure of objects from the monitoring region, wherein the data object associated with the departed object is deactivated; wherein - a concealment entry in the data object of an object is activated when the object is no longer detected by the at least one optical sensor without the departure of the object having been detected; - the concealment entry in the data object of an object is deactivated when the object is detected again by the at least one optical sensor; wherein an alarming procedure is triggered when - a data object has not been deactivated within a predefined period of time after its activation and the data object does not have an active concealment entry. wherein the at least one optical sensor detects image data in a monitoring region of the elevator car, wherein the detected image data are transmitted by way of a first data connection to an evaluation device arranged in the elevator car, characterized in that in the evaluation device the detected image data are compared with at least one reference image of the monitoring region in order to carry out the following steps: - detecting the entrance of objects into the monitoring region and at least one recognition feature for each detected object, wherein a data object for each detected object is activated in a data memory and the at least one recognition feature is stored in the data object; - detecting the departure of objects from the monitoring region, wherein the data object associated with the departed object is deactivated; - detecting the entrance of objects into the monitoring region and at least one recognition feature for each detected object, wherein a data object for each detected object is activated in a data memory and the at least one recognition feature is stored in the data object; - detecting the departure of objects from the monitoring region, wherein the data object associated with the departed object is deactivated; wherein - a concealment entry in the data object of an object is activated when the object is no longer detected by the at least one optical sensor without the departure of the object having been detected; - the concealment entry in the data object of an object is deactivated when the object is detected again by the at least one optical sensor; - a concealment entry in the data object of an object is activated when the object is no longer detected by the at least one optical sensor without the departure of the object having been detected; - the concealment entry in the data object of an object is deactivated when the object is detected again by the at least one optical sensor; wherein an alarming procedure is triggered when - a data object has not been deactivated within a predefined period of time after its activation and the data object does not have an active concealment entry. - a data object has not been deactivated within a predefined period of time after its activation and the data object does not have an active concealment entry.