Read the following extract from the article below and answer the question

Source: https://www.capetalk.co.za/articles/365901/sa-inventor-creates-smart-glove-that-translates-sign-languag-into-speech

A product can be defined as a physical good or sevice which aims to satisfy the needs of the consumer as a result of the product's direct use. Additional inherent factors, services and perception, such as being useful, desirable or convenient are also include. Describe the four distinct product layers and how each layer can be applied to smart glove.