https://stackoverflow.com/questions/54428880/scheme-to-link-back-to-a-web-application

I would like to use a Web Application on an iPad. It servers as a launcher for PayPal Here app via paypalhere://takePayment scheme, which receives a payment through a card reader, and then, after a successful payment, should return back to the app, with some GET parameters.

Is there a scheme (or a way to register it) which would switch back to the Web App?

If I didn't use the Web App, the workflow would have one extra step - a pop-up with "Open in PayPal Here?" question, plus, the return URL would open a new tab anyway.

Thanks!