The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Will Stevens:
TOP iPhone Protection all around the world - it's the best Forget about passwords and welcome to the future, this innovative app will lock your iPhone based on your fingerprints! This is the most advanced, realistic and powerful biometric protection available ! With animations and professional sound effects, it is simply the best. Impress your family and friends by showing them how protected your iPhone/iPad is. You will easily show them that your iPhone/iPad is able to read and recognize fingerprints, just like a high-tech devices prank. The look on their face when they get denied and you get granted is priceless, well worth it :) You will have 100% success with this application!