A miniaturized attachment mechanism for attaching a lanyard to a cell phone, MP3 player or other portable device having a hole in its outer casing is disclosed. The miniaturized attachment mechanism can have one end permanently fastened to a lanyard, and can include a spring-loaded ball detent within a hollow shaft. The hollow shaft diameter can be about 3 millimeters or less, while the diameter of the ball within the hollow shaft can be about 2 millimeters or less. The hollow shaft can be inserted into the casing hole such that the ball detent secures the mechanism to the casing until a pin release is used. In another embodiment, the miniaturized attachment mechanism can include a 1 millimeter shaft having a groove at an insertable end, while the casing encloses a two hole E-ring mechanism adapted to lock onto the groove when the shaft is inserted into the casing hole.