Does the shopify tap & chip card reader only work with Shopify Payments?

[RockSolid21]

I have a Shopify store but I can't use Shopify Payments because they don't accept my category (nutritional supplements). So I use a third party payment processor. I'm looking for a mobile solution to take orders through Shopify POS in person at live events. The Shopify Tap & Card Reader looks like exactly what I need but in the instructional video for it they say "all payments are processed through shopify payments." Does this card reader only work if you have Shopify Payments or can I use it if I have a different payment processor?