Magnetic field adjustments to a magnetic latch for producing accurate kinematics in a computing device

A portable electronic device comprising:

• a two part housing that encloses a processor, the two part housing comprising a first part and a second part, the first part having a display that allows viewing of a visual content, and the second part having an input device that facilitates communication of an input instruction to the processor by way of a tactile input;
• a hinge assembly that pivotally couples the first part and the second part and is capable of maintaining the first and second parts in an open configuration such that the visual content is viewable and the input device is accessible to the tactile input;
• and an adjustable magnetic latch assembly located opposite the hinge assembly that is capable of maintaining the first and second parts in a latched configuration such that the visual content is unviewable and the input device is inaccessible to the tactile input, wherein the adjustable magnetic latch assembly comprises:
• a ferromagnetic attachment plate secured to the first part at a first location, and a linear magnetic array secured to the second part at a second location in accordance with the first location, the linear magnetic array having at least two individual magnetic elements at least one of which includes (i) a first magnetic region having a first magnetic property, and (ii) a second magnetic region at least partially surrounded on two or more sides by the first magnetic region and defining a demagnetized zone, wherein each of the at least two individual magnetic elements is a monolithic substrate of magnetizable material.