Square has announced the beta release of its new Square Terminal API. Through the API, developers can integrate the Square Terminal with their own POS systems. That includes mobile platforms, web, desktop, anything. All payment types are supported, including touchless, NFC technology.
To help developers increase the security of their apps, PayPal has updated its developer portal to include a self-service credential provisioning feature that allows developers to generate their own client-secret pairs, which developers use to authenticate their apps with the PayPal API.