Sometimes a person in spirit will approach me when I am out and about in daily life. It can happen at the supermarket!
The reason for this is that they have a physical loved one who is also there, and usually not standing too far away from me at the time. The loved one in spirit always asks me to approach the physical person to tell them of their presence. It’s really not wise to follow this through, as the last thing I want to do is shock someone.
So, in other words, it is not an appropriate thing to do. I explain to the loved one in spirit why I can’t approach the family member/friend, and ask them to find an appropriate way to make contact.