How to remember Shopify-Cart History or SessionID Via Unity App?

[Naki]

Hi,

I'm struggling with Cart history trouble.

I made simple unity app that open own shopify account to buy some item if clicking 3d object to connect shopify-shop-item.

But Cart doesn't remember what add to my cart when I close unity scene I made.

During playing unity scene it works,though.

I think SessionID or Cookie cause this.

So should I made shopify-app to get  SessionID from shopify-server and to send it to Unityapp?

Could you give me some examples to deal with it?

Thanks,

Naki