College students from North Carolina are making headlines this week for an invention designed to protect women from being the victims of date rape.

But, some rape prevention groups aren't overjoyed about it, saying more needs to be done to prevent the crime rather than just detect the drug.

Starting from the time we're in college, women are warned about the dangers of date rape drugs. It's easy for someone to slip something in your drink and hard to know it happened until it's too late.

The nail polish, called Undercover Colors, is designed to help with detection. Like other inventions such as coasters and straws that claim to detect date rape drugs, this invention requires women to swirl their polish-covered finger in their drink.

If the polish changes colors, it may have been spiked with a date rape drug.

It's great in principle, right? Especially considering one in five women reports being a victim of rape in their lifetime. But, rape prevention groups wish more attention would be focused on prevention than detecting it after the fact.

So, what can we do, beyond just painting our nails?

WomensHealth.Gov has some suggestions. You've probably heard this before, but the easiest thing to do is to never leave your drink unattended. Even if you head to the bathroom, take it with you. If you leave your drink unattended, pour it out. If someone offers you a drink, go with them to get it. Watch the bartender pour it and carry it yourself.

Basically, never let it out of your sight.

Also, pay attention to how your drink tastes. One of the date rape drugs - GHB - actually tastes salty. If you feel like a drink is hitting you harder than it should, get help. At the very least, get a sober friend you trust to take you home.