A variety of products to assist with identifying currency and assisting with money management exist. Examples and product descriptions can be found here:
The EyeNote® application (app) was developed by the Bureau of Engraving and Printing (BEP) for the blind or visually impaired to use as a tool to increase accessibility to Federal Reserve Notes (U.S. paper currency). EyeNote® is built for the Apple iOS to allow the user to scan a bank note and communicate its value back to the user.
The app is available as a free download on the Apple App Store℠.
Ideal Currency is an Android App that also identifies currency for people who experience visual impairments by scanning the currency and speaking the denomination to the user.
Ideal Currency is available on the Google App Store and is free