Walmart tries using blockchain to take unsafe food off shelves

It’s scary when stores have to pull unsafe food. It can take days to pinpoint the batch or supplier that caused the problem, which could lead to people getting sick… or at best, force the store to yank more products than necessary. Walmart believes technology could offer better way – It’s tryingout blockchain distributed ledger as means of identifying sources of poisonous food. Digital receipts for the food identify everyone in the supply chain and ranging from original location through to inspectors and shipping companies. If everything passing through a specific warehouse is making people ill, Walmart can identify that troublesome food and yank it within minutes — and there’s no easy way for unscrupulous suppliers to alter the info.

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