Four German firms, DG Nexolution, DZ Bank, Festo and Giesecke+Devrient (G+D) have jointly developed a prototype solution to support machine to machine (M2M) payments in offline mode using tokenized deposits.
As part of industry 4.0, rather than companies owning industrial machines, they can rent them in a pay-per-use manner. The machine owner might not want to release the manufactured goods without payment, hence the need for a digital wallet to support payment for each item produced. To avoid the need for human intervention, the recipient is a wallet associated with a device.
However, not all machines are necessarily connected to the internet. It might be in a secure facility where internet access is blocked. Or it might be underground without Wi-Fi access, such as a mine. Hence, offline usage might be necessary.
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