The Safety Tat was invented by a mom of three who found herself writing her cell phone number on her kids' arms one day at an amusement park for peace of mind. You can customize your own tattoo complete with your number printed on it, or you can get blank safety tats and write in your number.
The tattoos last anywhere from 1-5 days to 2 weeks. The tattoos are acrylic based. You can also use them for allergy or other medical alerts.
Find out more here.
(Image: Safety Tat)