RFID terminal and method of using the same

A method of using a RFID terminal, the RFID terminal comprising:

• a directional antenna comprising a reception range, and configured to directionally receive signals transmitted by electronic tags on items in a region to be read;
• a camera configured to collect an image of the region to be read, wherein the reception range of the directional antenna is located within a field of view of the camera;
• a display screen configured for a user's operation to select an item within a region;
• and
• a controller configured to adjust the reception range of the directional antenna according to a range of the item selected by the user on the display screen, and screen information of a target item according to the image of the region to be read captured by the camera;
• the method of using the RFID terminal comprising:
• capturing, by the camera, an image of the region to be read,
• displaying, by the display screen, the image of the region to be read in the display region;
• receiving, by the directional antenna, the signals transmitted by the electronic tags in the region to be read;
• manually selecting an item in the image on the display screen;
• and
• screening information of the selected item;
• wherein the manually selecting the item in the image on the display screen comprises:
• selecting a first region and a second region in the image, respectively;
• and
• reading information of the item in an intersection set region, an union set region, or a complementary set region between the first region and the second region according to a preset manner.