If you were asking for specific hardware installation instructions (like installing a physical IDnow terminal), please clarify the specific device model for a more targeted post.
If you are logged into a banking or brokerage app, the serial number is often embedded in the "Identity Verification" section. idnow serial number install
Save the file. Then restart the IDnow service: If you were asking for specific hardware installation
How to Locate and Install Your IDnow Serial Number: A Complete Guide idnow serial number install