This is a 'proof of concept" project, where I am trying to design an app.
There would be 2 apps, one a "sender" app, and the other, a "reciever" app.
The sender app would be able to identify & recognize any other phone within a small range that had a reciever app on it.
The sender could select one of the receivers, and then a small encrypted message to the designated reciever, that can only be red by the designated reciver. Once the message is recieved, verification is automatically sent back to the "sender" app.
The sender app keeps track of the transmissions and those who recieved them.
Any takers? if this mini-project works out, then I will contract for a formal development of the apps.