# GTI Switch

> Source: https://docs.barcoder.ai/docs/payments/ST/gti-switch
> extracted at 2026-10-03
> Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards

**Country:** São Tomé and Príncipe (`ST`)
**Adoption:** Active
**Primary use:** Interop

## Technical standard

See [gti-switch](https://docs.barcoder.ai/docs/standards/gti-switch) for the underlying barcode/QR specification.

## Source

Extracted from [ST-sao-tome-and-principe.md](https://docs.barcoder.ai/docs/payments/ST) — see that report for full banking landscape, technical specifications, and citations.