What are the partner accounting services for clients?

Question

Computer networks

Good afternoon everyone, friends!
Interested in the question, maybe there are such services or applications. The essence is this:
There is Me, my partners and my clients. Clients have a discount card listed with partners.
I need to see which partners my client has visited.
Those. Client A came to partner B, the second one punched his number in the "service". I have to go to the personal account and I should see that client A has visited partners B, C, D, etc. A kind of discount club with a personal account.
Many thanks for the help to everyone who responded!

Answer 1

Discount systems exist. Bulk.
But they all assume the confidentiality of the participants in the discount system from each other.
You do not have a typical task.