Just like Credit and Debit cards, UPI (Unified Payments Interface) is another payment option. It abstracts your bank account details in the form of a VPA. Now instead of sharing complex account details, the user can just share the VPA to receive/send money. And all of this is realtime!
VPA is a Virtual Payment Address like your email (eg. payu@bankname). A VPA can be linked to any bank’s account.
Yes, this solution can work across web and mobile and web-view inside a mobile app. It is also supported on PayU’s existing Android SDK.
VPA can be created from a UPI enabled bank mobile application or third party application.
No. The current UPI flow doesn't allow a user to create a new handle. However, this is possible via PayU's dedicated UPI SDK. This is under development. Know more.