I can easily share my contact info with people that don't have the app
None. Want more features though.
This is a super cool concept and well executed. I meet a lot of people so this has been great and quickly became a habit. I really like that I can just choose what I want to share with someone, tell them to point their phone's camera at the code, and boom they get my contact info! No need for them to have HiHello (though they usually ask how I did that).