A - The DW generated QR code can be scanned and receive money by everyone.
B - For this TnG, its QR code generated only for the merchant to scan and receive payment.
A - The DW generated QR code, its value is determined by the user. That is the user just key in the amount and press OK. Then the corresponding QR code is generated.
B - For this TnG generated QR code, the amount pay is determine by the merchant and not the user itself.
A/B - Both DW and TnG software can support offline payment. This mean user without internet connection also can make payment.
A - For handset with DC installed, each QR code generated contained one digital coin code. This digital coin code is a prove of ownership of this amount by the user. Any lost of this amount, the user can make a police report, using this Coin ID and the Coin code as reference. If the user think his/her handset will not be used for a long time, he/she can make a one cent payment. Then screenshot the QR code generated to make a copy of it. This QR code contained the user Coin ID and Coin code, with other few elements as shown in picture below.
3751691674852117 #792193873120230 5211128191012534 0135432100001
#95
#798183
#00
In this case the Coin ID is
3751691674852117
, while the Coin Code is
792193873120230 5211128191012534 0135432100001
The user can claim back this one cent when he/she update his/her handset.
B - For user using TnG, The QR code generated is just an encrypted code to rectify the user is genuine or not.
