"The public doesn't read about most of these incidents in the newspapers," said Manik Mehta, cofounder of startup Leaf Wearables. "But this fact shook us to the core."

In February 2015, Mehta and four of his friends -- all college engineering students -- launched Leaf Wearables, a plan to keep Indian women safe through a piece of tech-infused jewelry that works with an app on your phone.

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The company has sold around 5,000 jewelry pieces in the last year in India and Turkey and hopes to continue expanding globally.

The device, called SAFER, is embedded in various wearables, like necklaces, key chains and bracelets.

If wearers feel unsafe, they can tap the pendant twice, sending a message and location details out to family members and friends, depending on who's included in their network. It also has a GPS option for network members to view the wearers' location.

Rechargeable pieces are about $52 to $74 each.