https://bitcointalksearch.org/topic/m.6895575
The system i was thinking about was a simple pull with 2factor auth.
Take a festival or holiday resort for instance,
Client arrives and charges up a QR wristband with BTC, pays for food/goods by showing QR to the merchant. Confirms the price of the goods and enters password/pin into the merchants scanner. goods paid/done.
It alleviates the need to carry cash, cards or phone & with the 2factor auth its as safe as using a CC.
That could work very well for night clubs etc. as well. When you order drinks they simply scan your qr bracelet.
For these scenarios this system would be ideal, low value/high frequency transactions.