@npub155m2...dcvg can be great if you’re already comfortable with the tech, otherwise it just requires patience until you get the hang of it:

How to create a Bitcoin Point of Sale (PoS) | BTCPay Server Blog

Official BTCPay Server Blog

@ZEUS PoS is much easier as it only requires you to download the mobile app. It integrates with Square, which can come in handy if you need to accept credit card payments and simplify accounting. Plus it’s self-custodial & open-source, just like BTCPayServer

Overview | ZEUS Documentation