Provided is a positive electrode active material for a lithium secondary battery including a positive electrode active material particle and an electrolyte-containing metal oxide coating layer having a porous structure and a method of manufacturing the same. Parameter information such as compression, decoding and editing parameters is stored in a database in correspondence with unique information. Then, a location of a marker on the model is identified. Incorrect dosage settings of the inventive pen may be easily corrected by a user via a novel dial-back feature that enables the user to reset the dose amount without expelling medication and without having to dial the dose knob to an extended, reset position. A method for converting the functional configuration of a door handle system is also disclosed.