Can a user's access be restricted to specific fields?

Summary:
Is it possible to restrict a user's access to 3 or 4 specific fields?

Content (please ensure you mask any confidential information):

We are looking to integrate with a 3rd party and need to limit the fields available for the integration's user account.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):