After fabricating Jugnu, the country's tiniest satellite launched last month, Indian Institute of Technology-Kanpur graduates have now come up with a matchbox-sized device to monitor wear and tear of railway tracks and prevent derailment.
http://ummid.com/news/2011/November/14.11.2011/device_to_prevent_derailment.htm
http://ummid.com/news/2011/November/14.11.2011/device_to_prevent_derailment.htm
