Method of controlling operation of an elevator system comprising a hoistway extending between a plurality of landings situated on different floors; at least one elevator car configured for moving along the hoistway between the plurality of landings; and landing control panels provided at each of the landing and configured for receiving control inputs from passengers; wherein the method includes: receiving at least one control input indicating a passenger transport request via one of the landing control panels, the control input comprising at least one passenger transport request parameter; monitoring passengers within or outside the at least one elevator car and determining at least one passenger parameter associated with the passengers; comparing the at least one passenger transport request parameter with the at least one passenger parameter; and controlling further operation of the elevator system based on the result of said comparison; characterized in that the method further includes identifying all individual passengers inputting control inputs, after the elevator car, which has been assigned to the respective passenger by the dispatching algorithm, has arrived at the passenger's floor, checking whether the passengers associated with a control input have boarded the elevator car, and ignoring a control input if none of the passengers associated with said control input boarded the elevator car. a hoistway extending between a plurality of landings situated on different floors; at least one elevator car configured for moving along the hoistway between the plurality of landings; and landing control panels provided at each of the landing and configured for receiving control inputs from passengers; wherein the method includes: receiving at least one control input indicating a passenger transport request via one of the landing control panels, the control input comprising at least one passenger transport request parameter; monitoring passengers within or outside the at least one elevator car and determining at least one passenger parameter associated with the passengers; comparing the at least one passenger transport request parameter with the at least one passenger parameter; and controlling further operation of the elevator system based on the result of said comparison; characterized in that the method further includes identifying all individual passengers inputting control inputs, after the elevator car, which has been assigned to the respective passenger by the dispatching algorithm, has arrived at the passenger's floor, checking whether the passengers associated with a control input have boarded the elevator car, and ignoring a control input if none of the passengers associated with said control input boarded the elevator car. receiving at least one control input indicating a passenger transport request via one of the landing control panels, the control input comprising at least one passenger transport request parameter; monitoring passengers within or outside the at least one elevator car and determining at least one passenger parameter associated with the passengers; comparing the at least one passenger transport request parameter with the at least one passenger parameter; and controlling further operation of the elevator system based on the result of said comparison; characterized in that the method further includes identifying all individual passengers inputting control inputs, after the elevator car, which has been assigned to the respective passenger by the dispatching algorithm, has arrived at the passenger's floor, checking whether the passengers associated with a control input have boarded the elevator car, and ignoring a control input if none of the passengers associated with said control input boarded the elevator car.