Hi, are you referring to a web or mobile security scanner? I heard about this type and it can identify vulnerabilities even on mobile devices that could lead to data theft. My husband told me to try searching about a retina security scanner. That application might be the answer to your inquiry.
I'm using McAfee Mobile Security and AVG for my Android phone. I think private information especially banking account shouldn't be added into your phone. It's too risky. No methods secure that hackers can't access your phone and get what they want. I heard many story abt this. :-s
Do you need a security scanner for your mobile? I thought that mobiles are virus-free or am I wrong? Anyway, what I know is you should use something that protects you from being tracked, for example your searches from being tracker, like going incognito in google, perhaps? I know that companies use tracking software like this (https://www.ghostery.com/intelligence/business-blog/business/solve-latency-problems-faster/) to keep up with their customers or potential customers and maybe that is something that you should prevent from happening. Just my 2 cents.