As we all know bitcoin has come long way in the eight or so years its been in existence, but their's still long way to go before the digital currency becomes a widely used method of paying for goods and services.
we should know.
1.what challenges are facing bitcoin?
2. how we can prevent it?
3. how we should face those challenges?
I think as many here do too that the main problem or barrier is adoption, locally and globally - it's not as if a whole new platform of hardware needs to be implemented, like with say chip and pin machines - anyone with a mobile phone or other smart devices can send, receive and generally use Bitcoin (And the Alts), even existing in store POS units could be very easily adapted to throw up a QR code to receive the payment.
It's not out of boundaries for many people, is not hard to use and the tech layer is there right now to utilize across differing devices.