| CPC G07C 9/10 (2020.01) [H04N 13/282 (2018.05); E05Y 2400/44 (2013.01); G07C 2209/63 (2013.01)] | 20 Claims |

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1. An access gate device comprising:
one or more support posts;
one or more entry barriers configured to selectively block access to an entry path extending from an entry side to an exit side of said access gate device, an end of each of the one or more entry barriers being supportably connected to one of said one or more entry barriers;
one or more three-dimensional (3D) cameras arranged at least on an entry side of the access gate device, each of the one or more 3D cameras being configured to provide 3D depth data of a view range of said 3D camera, each of said 3D cameras being arranged on one of said one or more support posts; and
a control unit configured to:
define at least two consecutive volumetric detection zones in front of the access gate device at least on the entry side, wherein the view range of the one or more 3D cameras-arranged on the entry side covers the at least two volumetric detection zones on the entry side;
detect a presence of at least one user inside at least one of the volumetric detection zones on the entry side based on the 3D depth data obtained from at least one of the at least one or more 3D cameras arranged on the entry side; and
generate detection data in response to the detection of the presence of the at least one user for controlling access of users via the access gate device.
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