One of the most popular apps among teens is Snapchat, which allows users to take a photo, send it, and then the image disappears on the other end after about ten seconds.

Apps can be downloaded straight to smartphones, so it might be harder for parents to track when their children are using them if the children have their own smartphones. Snapchat is big right now because some think it represents an “untraceable” way to exchange images. And many times those images are of a sexual nature. But teens who think they are practising “safe sext” while Snapchatting are wrong.

Saving images received in the app is as easy as a push of a button on any device. Smartphones can “screen-grab” images with just a push of a button. That image can then be texted, shared, or even posted on social media for all to see.

•For a list of other sites teens are using go to www.wtol.com/story/22135407/a-parents-guide-to-keeping-kids-safe-with-new-tecnology-a-wtol-11-special-report