Module/Extension for logged-in visitors (in-person)

Module/Extension for logged-in visitors (in-person)

Ok, thanks in advance for the help. I'm working on a project for a client that operates a "Doggy Day Care" business. They want me to develop a web-based system for tracking what clients (dogs) are currently in the facility.

Basically, a single-page interface where the employee clicks on a empty slot, enters the Client's name, dog's name and basic contact information and perhaps even a photo of the dog that can be uploaded via .jpg or whatever. When "log in" or whatever button is clicked, it will allow you to enter that information and then is stamped with that time.

When the client checks-out, you click another button and it ends their time and reports that total time they were there for billing purposes that can maybe be exported to a spreadsheet or something.

I've attached the "concept" the client gave me. Again, thank you very much. I'm looking for a Joomla module or plugin that would accomplish this. Thank you!