Odoo POS system supports Vantiv (now Worldpay) along with other major US payment processors including Stripe, Adyen, and Square. The Odoo point of sale software connects to physical payment terminals, allowing customers to swipe, insert chip, or tap contactless cards while the transaction syncs automatically with your sales record. You can also integrate with payment gateways for card-present and card-not-present transactions. This flexibility means US retailers can keep their existing payment processing relationships while upgrading their point of sale infrastructure to Odoo.