Odaily Planet Daily News South African encryption start-up Momint has launched a blockchain wallet that allows South African residents to use cryptocurrency to purchase shopping vouchers. Voucher holders can pay at more than 10,000 retail stores in African countries. South African retail giants such as Checkers, Woolworths, Engen and Takealot all accept Momint's shopping vouchers. In addition to paying, the Momint app can also be used to send cross-border remittances at a fraction of the cost charged by regular remittance companies. (bitcoin.com)