Yes I checked the app and effectively allow payments from any source via lightning, as it provide the QRcode and the invoice string. Was just funny they choose to use the a nfc card and a phone for the video.

They say:

> Point of Sale (POS)
> 
> Receive physical payments and from exchanges quickly.

So I would assume that the customers can also send sats from a node without the card. They have support for Lightning Addresses.

nullama

Stacker Saloon

saloon

> (you just need a LN address)

A LN address and customers with bolt cards...