So, here's a funny story. My husband installed a new app on my phone today called "Guardly" (can't link to it from my phone). You program up to five people as emergency contacts and at the touch of a button it will call, email and text them. The message goes something like this: "Jessica M is experiencing an emergency near xxx location."
The funny part is that it sends a test message to your contacts. I did not know this. My poor mother was just going about her business today when her phone rang (from my number) and she got the above message when she answered. 
She thought my husband's plane went down. She wasn't a happy camper when I called to tell her it was a false alarm!  Whoops!  Sorry Mom!!