INPUT DEVICE AND INPUT SYSTEM

Provided is an input device which may be provided at any location on the front surface of a touchscreen panel and which enables the touchscreen panel to detect an operation performed on the input device. An input device includes a contact board, a rotary click cam, and fixed electrodes 252a, 252b. The contact board is placed on a front surface of a touchscreen panel. The rotary click cam is provided rotatably around a rotational axis L3 with respect to the contact board. The fixed electrodes 252a, 252b are arranged on a lower surface of the contact board. The fixed electrodes 252a, 252b are configured to, as the rotary click cam is operated, be switched from an electrically conductive state into an electrically non-conductive state, or vice versa. The fixed electrode 252a includes a first shifted portion P1 shifted by a first predetermined distance R11 with respect to the fixed electrode 252b. The fixed electrode 252b includes a second shifted portion P2 shifted by a second predetermined distance R12 with respect to the fixed electrode 252a.