Now that android does not let us use the IMEI number, I am unsure about what to use for my use case which is dealing with real money transactions.
The android guidelines states this: Use a Firebase installation ID (FID) or a privately stored GUID whenever possible for all other use cases, except for payment fraud prevention and telephony.
But I was unable to find anywhere that suggests what to do for payment fraud prevention and telephony.
Currently I have decided to work with SSAID, but I would really appreciate if someone in the community provides some insight to this or can guide me in the right direction.