Needle-point pen apparatus and methods for marking and/or creating articles

A method of imprinting conductive ink into a material using a needle-point pen, the needle point pen comprising:

• a barrel;
• a needle movably disposed within an inner channel of the barrel, the needle having a tip and an elongate shaft;
• a driving unit coupled to the needle and providing a driving actuation to the needle, the driving actuation causing the needle to reciprocate within the barrel between one or more extended and a retracted positions;
• the needle being designed to at least partially insert conductive ink into the material, wherein the conductive ink imprinted into the material has variable resistance.;
• a conductive ink reservoir supplying the conductive ink to the needle for at least partial insertion into the material;
• and
• a computing device controlling the needle actuation and the conductive ink supply to the needle.

A method of imprinting magnetizable ink into a material using a needle point pen comprising:

• a barrel;
• a needle movably disposed within an inner channel of the barrel, the needle having a tip and an elongate shaft;
• a driving unit coupled to the needle and providing a driving actuation to the needle, the driving actuation causing the needle to reciprocate within the barrel between one or more extended and a retracted positions;
• the needle being designed to at least partially insert magnetizable ink into the material;
• a magnetizable ink reservoir supplying the magnetizable ink to the needle for at least partial insertion into the material, wherein the magnetizable ink contains magnetizable particles suspended in the ink;
• and
• a computing device controlling the needle actuation and the conductive ink supply to the needle.