Simpucations
An application in the form of an iOS app with a back end node and sockets server with a mongo DB which allows people to stay in contact with one another you can create a personal profile consisting of your contact information and you can then share this using a QR code to someone else who has the app installed. after you have the contact you can then use the in built IM client to talk to them or any of their contact information they have shared with you.