HIPAA violations involve the disclosure of protected health information (PIH) related to patients who are seeking medical care at a facility. You are subject to HIPAA requirements if you work at a covered facility.
Here's a link to the HIPAA website and FAQ's. I really suggest reading about it, since there seems to be some big misconceptions here about what HIPAA actually is. Understanding Health Information Privacy
In order for you to violate HIPAA, you have to share a patient/client's protected health information (such as name, address, SSN, photograph, medical record number, DOB, etc.) with a party not involved in her care. So telling your friend that Brad Pitt is a patient in X hospital would be a HIPAA violation. Telling Brad Pitt's doctor that he has been admitted is not.
If you put on your resume:
RN Shadowing Experiences:
Med-Surg unit: XYZ Hospital, 48 hours
OR: ABC Hospital, 36 hours
Pediatrics: XYZ Hospital, 60 hours
Have you shared any protected health information about patients? No. Is it a HIPAA violation? Of course not. It's no different then listing the places you have worked or done your clinical rotations.