Shopify POS Browser Version Interface For Demos/Refreshers

How, as a partner, can i login to a dummy shopify POS app?

As a partner, its really tricky for me to show what POS can do for a client - and for my clients, it can be hard to help them with questions / doubts or just directing them when i dont have a POS interface to look at as they are talking to me over the phone .

Can we see a dummy browser based interface of the POS of a store with some products on it that we can use to screen-share a demo to a customer, or use to help walk them through some steps or doubts that would be web-browser based ?

Does this even exist and im just not aware ?

What about as a collaborator, i can request to remote access the POS device using shopify partner tools ?

Lots of my clients are of a generation, very busy people or sometimes just have a bit of lack of confidence in their own abilities that just need to be shown where a button is or an option is, but i dont have a means to show them this or explain this to them when im remotely connected with them and i dont have a POS device updated to the latest version and logged into a store handy!

What is your solution.