Leaf Wearables, a New Delhi-based company started by five engineers in 2015, invented the SAFER PRO - a tiny computer chip built into a wristband that sends alerts to emergency contacts, even in areas without cellular phone service. Once activated, it inconspicuously transmits location details to the network of responders within 90 seconds and records audio. The founders of a technology start-up hope their invention will make attacks on women a “concern of the past” in India, which was recently named the world’s most dangerous country for women in a poll of experts.