Think about all of the devices coming out with NFC capability. Combine this with a quality, proven app on say android/iOS and you have a good replacement for cash/paypal for in-person transactions. There is no specific worries about trust, as it is just as risky as a cash/goods handover in person and what address someone is using is not an issue either, as the apps would store all that information automatically and transfer over the appropriate info when the 'bump' is made.
What do you guys think? To me, this sounds pretty sweet and something that could reasonably become a possibility.
The most important question is:"How we will stop all the scammers,who will try to abuse the system?"
I would say that the merchants(or the trading platform) will have to offer:
1.Refund option.
2.Buyer/sellers review/ratings system.
3.Dispute/arbitrage option.
Well,services like Openbazaar offer those features,but Openbazaar isn't that popular(probably because it's a software,not a website or an Android/iPhone app).
This might be solved even better using smart contracts, since you don't have to trust any 3rd party in the process.
To OP.
Of course it is very good alternative to FIAT money and all the processors which you have to use in order to make online purchases. But right now there are still few problems for this - relatively high fees, big volatility and user experience (simplicity). I believe once trust in FIAT will fall people will start using BTC/crypto more as a currency - for real purchases.