What the existing connection tells
In family homes, rentals and businesses, old phones, tags or suppliers sometimes remain active after someone leaves. That is not a technical detail but a management issue.
advice
Manage access rights in an intercom
An intercom with an app or tags is only valuable if it is clear who has access and who may withdraw that access.
The technical choice
Create a list of administrators, daily users, temporary access, and physical resources such as tags or codes. Check which permissions each of them actually needs.
What you let me arrange
Use personal accounts or issuance data where the system supports it. Establish one fixed procedure for departure, loss of a tag, and transfer of management.
Delivery to the door
Perform a test: add a temporary user, then remove them and confirm that opening and video access disappear. Keep the management instructions in a place that the owner manages.
Frequently asked questions
Do I need to remove access if someone gets a new phone?
Check and delete old sessions if they are no longer needed.
Are his tags anonymous enough for management?
Only if the issuance and withdrawal are linked to a clear registration.