A method for controlling a gate device in connection with at least one gate, comprising: identifying, by an identification module, an authorization status of an object; detecting, by a pressure sensor module, pressure signals caused by the object at a first moment, if the authorization status is satisfied; determining, by a processing module, whether or not an illegal tailgating event occurred based on the pressure signals; and generating, by the processing module, a control signal for opening the at least one gate to facilitate the object to pass through the at least one gate in response to a determination that the illegal tailgating event did not occur, characterized in that the determining whether or not an illegal tailgating event occurred based on the pressure signals includes: generating, by the processing module, pressure information by processing the pressure signals corresponding to the first moment, the pressure information includes at least one first trigger region and a center point of the at least one first trigger region, wherein the at least one first trigger region includes a plurality of sub-first trigger regions corresponding to the first moment; determining, by the processing module, a first number of the at least one first trigger region, wherein a distance between center points of two of the plurality of sub-first trigger regions is less than a first predetermined threshold; and determining, by the processing module, that the illegal tailgating event does not occur if the first number is equal to or less than two. identifying, by an identification module, an authorization status of an object; detecting, by a pressure sensor module, pressure signals caused by the object at a first moment, if the authorization status is satisfied; determining, by a processing module, whether or not an illegal tailgating event occurred based on the pressure signals; and generating, by the processing module, a control signal for opening the at least one gate to facilitate the object to pass through the at least one gate in response to a determination that the illegal tailgating event did not occur, characterized in that the determining whether or not an illegal tailgating event occurred based on the pressure signals includes: generating, by the processing module, pressure information by processing the pressure signals corresponding to the first moment, the pressure information includes at least one first trigger region and a center point of the at least one first trigger region, wherein the at least one first trigger region includes a plurality of sub-first trigger regions corresponding to the first moment; determining, by the processing module, a first number of the at least one first trigger region, wherein a distance between center points of two of the plurality of sub-first trigger regions is less than a first predetermined threshold; and determining, by the processing module, that the illegal tailgating event does not occur if the first number is equal to or less than two. generating, by the processing module, pressure information by processing the pressure signals corresponding to the first moment, the pressure information includes at least one first trigger region and a center point of the at least one first trigger region, wherein the at least one first trigger region includes a plurality of sub-first trigger regions corresponding to the first moment; determining, by the processing module, a first number of the at least one first trigger region, wherein a distance between center points of two of the plurality of sub-first trigger regions is less than a first predetermined threshold; and determining, by the processing module, that the illegal tailgating event does not occur if the first number is equal to or less than two. <EOS>