The name, date and location of the contact of persons whom had contact with an infected person are sent up to the relevant county public health department. If the contacts are in another county or state, they are sent to them.
Home address and telephone numbers are collected if the infected person knows them. If they don't then public records are used to find the person and inform them they they are in contact with an infected person and strongly advised to be tested.
How the infected person interacted with the contact is limited to clinically relevant information.
Back in the early months of the AIDS/HIV epidemic it was felt that it was important the know the route of bodily fluids contact. PV, PM, PA, MM, MV, MA, VV were the abbreviations used.
When it was realized that the only thing needed to be known was if there was exchange of bodily fluids asking how the bodily fluids were exchanged was dropped.
With Covid19 all that is needed to know if it was a handshake, a kiss or a hug.
So if you are contacted by a public health officer about a contact and they ask what was the contact just say a kiss and a hug. They don't need to know anymore than that.