PANAJI: In June, Prime Minister Narendra Modi, via video  conferencing, appreciated the innovation of three students  of Dr K B Hedgewar High School at Cujira. They had invented  a device that automatically dims the headlight of an  oncoming vehicle for a driver. Now, two Class VIII students  of the same school have designed a device that can help the   visually impaired detect obstructions in their path. 
Source: https://timesofindia.indiatimes.com/city/goa/hedgewar-students-create-device-to-help-visually-impaired-navigate/articleshow/66126743.cms