How can customers order directly from their table at a bar or restaurant?

[Dirky]

We operate a small craft beer bar. We are using the POS and visiting tables. However I'd like to add either an app, so customers

can easily, simply and quickly order from their table theirselves, or a fast and simple purchase from the shopify site. Ideally they need

to be add their table number.

I can't believe there is not something out there, or that Shopify have not developed an app like this yet.

Thanks.