The project is aimed at installing sensors in public places so that any action of spitting can be detected and the defaulter can be fined/ punished. Gradually this system can abate the act of spitting in public places and ensuring a hygienic environment. For a test area, an interior of bank building has been taken into consideration for primary iteration of the prototype. It comprises of opaque PCB connected to a circuit with buzzer with a combination of separate camera surveillance system. Ideally, the sensor needs to be printed on transparent plastic sheets. Instead of the buzzer, a camera or an interactive display may also be installed. However in this project, output has been limited to a buzzer being activated when spit falls on the sensor.
Spitting is a very common practice in India and several other places. Markets, bus stops, railway stations, archaeological sites are all made very unhygienic. Spitting makes the environment dirty, spreads communicable diseases and degrades the importance of the monument, complex or area. Despite of all advancement in technology and economy, India lags behind hugely in sanitation and hygiene. While Singapore, USA and UK have stringent laws, India is still negligent and yet to find a solution to curb this menace.