• Senthil and his team have been providing tech-driven solutions to social and civic issues since 2014 with their apps such as Hello Collector and Swachch Madurai. The Madurai Kavalan app helps city residents to notify the police about their locked homes, lodge complaints and upload pictures of suspicious persons, unclaimed baggage or vehicles without having to visit the police station. It has contact details of police personnel in 62 units in the district and helps Madurai Police to prevent burglaries.