A little while ago, the INK HUNTER application was launched in the App Store. With the help of AG technology (augmented reality), the application allows users to see how a tattoo would look on their body, before making the decision to permanently impregnate it with ink. You can choose from dozens of tattoos from the gallery or upload your own tattoo sketches.
https://www.youtube.com/watch?v=LmYffunQmg8
To make the tattoo appear on your body, you simply have to draw a smiling face in the place where you want to see the tattoo. After the application detects the smile, it will digitally place that tattoo on you, at which point you can take a photo and see how the tattoo looks. Simple, but effective, I say!
If you are interested, you can download for FREE the application.