Live Fingerprint scan (background checks).

I have been offered a job in an assisted living facility. I was told that I have to pass a live “fingerprint scan”.
At the age of 20, I was arrested; accused of theft. In the end I had no convictions, nothing. I have had background checks done (ie. My current job). Each time the arrest shows up on my record. My current job asked that I write a statement explaining what happened. I also am in college, where a background check was required (human and health services schooling). I am still employed with my current job. This new job offer is a great advance both salary wise and work environment. Also, relates with what I am studying.
Should I be worried about passing the fingerprint scanning or not?