So basically a mobile wallet. Tons of those already exist.
I'm pretty sure he isn't talking about bitcoin, but rather his own service. Look at how PayPal does things, OP. Pretty sure that is what your trying to build. If you want to use a blockchain, create an altcoin and premine 100% of the coins, make it POS and release a mobile wallet, allowing people to send money to you and get your coin, and vice versa.