Friends photos uploading to my device after signing them out
I had my friend temporarily login to my iPad with their Apple ID. However after signing them out and signing myself back in, their photos are uploading into my library.
1. Would they also have access to my photos?
2. What is the best way to remove the photos? I’m guessing restoring a backup, but I just want to make sure.
3. Is there other personal information that I will need to remove.