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It looks like you need to scan in on the way into the shop. If your phone runs out of the battery, is it impossible to eat?
by iandioch 9y ago
It looks like you need to scan in on the way into the shop. If your phone runs out of the battery, is it impossible to eat?
- samfriedman 9y agoMaybe a physical barcode card combined with some kind of biometric (thumbprint, faceID, microbiome biopsy) could form an "offline" backup authentication.