This app was removed from the App Store.
iOS iPhone Entertainment
"This app is intended for entertainment purposes only and does not provide true fingerprint scanning functionality."
This is a very impressive application for iPhone.
Just place your finger on the scanner and wait for the scanner to check your fingerprint.
For more info see the info page.
Have fun with your friends and family
when you show them this app.
You will be able to lock and unlock your device
but they won't have access!
They will be amazed!!!
Green Scan is the best trick to use for entertainment purpose only.