If you don't want to pay $500 000 for in-game hacking device, there is a nice alternative for you. It works like a original game mechanic, the only difference is you have to click by mouse instead of keyboard.
There are only four fingerprints, so it usually takes a few hours to remember them all.
This tool is mobile-friendly, so you can add it to your home screen and it will work even without internet connection, just like native application.