Wearable panic buttons

Callie Stephens loves hiking; she also enjoys concerts and meeting up with friends late at night. But she sometimes feels unsafe, so she carries a built-in security blanket-- or, more accurately a security button.

"It's a very discreet button that I can put on my key chain or I can clip it to my bra strap or clip it to my pocket."

Stephens uses a gadget called the Revolar; when pushed, it texts family or friends to let them know she's in trouble. It also uses GPS to show location.

It's already come to Stephens' rescue.

"A guy, who was by himself, was following us just a little too closely, so I activated a yellow alert and that caused two people to call me within the next 30 seconds."

Tech guru Jennifer Jolly explains there are numerous high-tech wearable safety gadgets hitting the market.

"Everything from basic alarms to discreet panic buttons that call your friends and family; there's even one that's just now coming out that calls emergency responders right away."

They are small, sometimes disguised as jewelry-- and what about privacy?

If you're concerned the gadgets can track your every move, Jolly says that's not really how these work.

"These gadgets aren't actually tracking you. They're helping you connect in a time of need. So, that all works through an app and you decide when and where and how you want to be located."

For many, you need to have your phone nearby to keep the devices connected. Others are merely loud, good old-fashioned alarms.

Stephens prefers her high-tech option, saying it gives her an extra level of security to go out and do what she loves.

"It gives me more confidence to do things that, maybe, before I felt uneasy about."

The devices range from $5 to a couple hundred and some require ongoing subscription fees.