Building a MAUI App... (1 Viewer)

[prabha_friend]

I recently got a requirement from a client which is unique to him. Beyond normal expectations. He is very keen to have one particular feature a must present.
Currently All my Customers are making the GPay and other UPI transactions entering manually into the system. For example if One person is passing an amount through an UPI app say GPay. The Billing Person has to Select "GPay" from a list of UPI inside a combo box and then enter the respective Amount along with the UPI ID if needed. The Current customer wants to automate this step too. How he wants is:

1. Customer pays the amount through an UPI app.
2. His System has to receive and read the Message.
3. If the message is from his bank and it's an UPI Credit Alert.
4. My Software has to extract three things: Who paid the Amount (UPI ID), How Much (Amount) and When and where and all...

I chose MAUI for it. Any other simple way? Please suggest. Thanks.