I want to take a second to let everyone know that we care about their anonymity.  First of all, we do not store any personal info in the chain (we store the contact records in IPFS), and for GDPR compliance we allow a user to delete the contact record (we update the fields with empty strings and save the new value with a deleted flag=1).  Second, even with BOINC, we only store your public key and your CPID in the chain, we do not track or store any personal info.  You may use a nickname in your boinc account if you wish.  In that vein, Id want to veer away from any more features that makes biblepay look like we are trying to track people.

However, from the perspective of Mobile Devices, and public churches, yes, I like your idea.  I was going to say, we could make a general purpose field like 'usertext1' and allow them to store anything they want (or a phone #), but yes, it would be nice to send BBP from the actual mobile phone # that MIP grabs from the android device to another mobile user - goes hand in hand with the unbanked features.  As far as the mobile android actually retrieving the IPFS record: its possible.  So, yes, we could do it.

Let's take a baby step first and see if MIP is willing to add a tithe button to the mobile app.  That will exercise his ability to retrieve an IPFS record on the mobile and send Biblepay as a tithe to a recipient.  Then you can add a github request to our mobile branch.  If you want go ahead and add one for Tithing and send via phone number.