Biochips are microprocessor chips used in biology that allow many biological tests to be performed simultaneously on a single chip. The concept was developed in the 1980s by Fred Sanger and Walter Gilbert. A biochip typically consists of a transponder that receives and transmits signals and a reader that decodes the signals. Biochips have applications in areas like medicine, identification, financial transactions, and e-commerce. While biochips are still an emerging technology in India, they could potentially replace documents like ID cards and passports. However, challenges remain regarding the availability, costs, and standardization of biochip technology.