In recent years, the development of Personal Protective Equipment (PPE) is increasingly leading companies priorities, given the primary importance of protecting workers health. We live in a society organised like a perfect mechanism of a watch. Each person is a fundamental piece of that mechanism and performs an essential job without which society would not survive. The International Labor Organization (ILO) estimates that over 1 million workers die every year. Equally tragic is the number of those who remain more or less severely disabled due to accidents at work. It is necessary to develop an electronic system to recognise the wearing of PPE to achieve continuous and reliable monitoring.