Kids hiding things from their parents isn't new, but certain apps are making the process a lot easier.
District attorney Pamela Casey is warning parents about a Calculator% kids are using to hide photos and files on their phone.
"You may think that's a calculator but when in fact if you go into it, it allows your child to hide photos from you," Casey said in a video to parents which has now gone viral.
The video was uploaded on the Blount County District Attorney-41st Judicial Circuit Facebook page and has since been viewed over 2 million times.
Does your child have this app-- Calculator%? You need to know what this app really is for--- and it isn't for adding numbers! Check out this new video (less than 2 minutes)!Posted by Blount County District Attorney-41st Judicial Circuit on Tuesday, September 1, 2015
The Calculator% app Casey is referring to allows files to be protected by a secret password.
"I can put in a secret code and it takes me to a folder where I can hide photos," Casey said.
Casey is urging all parents to look for the app on their teen's phone.
"Take a minute, grab that phone, look for the calculator percentage app, make sure you're staying on top of that with your children," she said.
For parents who are unsure how to identify the difference between the normal calculator app and the Calculator% app, Casey has screen shot the icon.
The hiding app has a percentage symbol instead of an equals sign.
Casey is encouraging other parents to share other apps they've had problems with so "together we can protect our children."