Engineered surface for providing low friction and improved comfort on devices that contact the skin or other external tissue of the user

A method of making an apparatus structured to contact only the external tissue of a user during use thereof and not be inserted into or through the external tissue of the user, comprising:

• designing an engineered surface wherein at least a section of the engineered surface comprises a plurality of non-random, predesigned surface features each having a like geometry, wherein in the section a pitch between each immediately adjacent pair of the surface features is less than or equal to a predetermined maximum pitch value, and wherein in the section a height of each of the surface features is equal to one another and less than or equal to a predetermined maximum height value;
• and
• forming a contacting portion for the apparatus in a manner wherein the contacting portion includes the engineered surface, the contacting portion being structured to directly engage the external tissue of the user.