A walk-up security system (20) for a motorized cycle (25) is disclosed herein. The system (20) preferably comprises a motorized cycle (25) comprising a relay (26) and a 3-axis gyrometer (27), and a keyfob (30) paired with the relay (26) of the motorized cycle (25). The keyfob (30) comprises an accelerometer (31). The relay (26) is connected to a interrupting type wire (28) of the motorized cycle (25). Starting of the motorized cycle (25) is disabled when the keyfob (30) is a predetermined distance from the relay (26).