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I have been contemplating to build a solution based on an rpi with infrared hand scanner and a touch display attached to our fridge.

Now, I use a combination of Todoist, IFTT and google home. "Hey Google, groceries, add Milk". Done.

Perfect while cooking. No phone, scanner or any other input device needed.

Our family does the same, but with Google Home + Google Keep. Shared Costco List, Amazon List, Home depot list, and Grocery list between me and spouse. "Hey Google, add Milk to the Shopping List" "Hey Google, add Eggs to the Costco List" No need for third party integrations too.

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