Magnetic Sensing Device For Lid

A device, comprising:

• a magnetic sensor, wherein a first output of the magnetic sensor is triggered by magnetic field having a first polarity and a second output of the magnetic sensor is triggered by magnetic field having a second polarity;
• a first magnet;
• and
• a second magnet,
• wherein a strength of the second magnet is selected based on an operating point of the magnetic sensor such that, when the second magnet is within the predetermined distance from the first magnet, a magnetic field from a pole of the second magnet having the second polarity saturates the magnetic sensor.

A case, comprising:

• a body;
• a lid, the lid moveable with respect to the body between an opening and a closing position;
• a magnetic sensor positioned at the body, wherein a first output of the magnetic sensor is triggered by magnetic field having a first polarity and a second output of the magnetic sensor is triggered by magnetic field having a second polarity;
• a first magnet positioned at the body;
• and
• a second magnet positioned at the lid,
• wherein a strength of the first magnet or a distance between the first magnet and the magnetic sensor is selected such that when the lid is in the opening position and the case is open, a magnetic field from the first magnet having the first polarity causes the first output and the second output to have a first set of values, and a magnetic field from a pole of the first magnet having the first polarity saturates the magnetic sensor.