A foot operated hand sanitisermachine has been developed by the Motilal Nehru Government Polytechnic College here for the benefit of the people to protect themselves against COVID-19.The gadget had been designed jointly by students and staff of the polytechnic college, a release from the nearly 60-year old institution said here on Wednesday.A team of the polytechnic staff handed over the machines to various government departments and also to District Collector T Arun on Wednesday.The Collector lauded the innovative skill of the staff and students particularly during the current crisis, officials said.