> For the complete documentation index, see [llms.txt](https://developer.paywall.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.paywall.one/payment-orchestration-integration-document/physical-pos/6.-payment/sync.md).

# Sync

The flows used within the physical POS world when you use <mark style="color:green;">Paywall's</mark> own applications are referred to as "Sync" within the PayWall ecosystem.

Sync payments are transmitted directly to the device in real-time via servers.