Read the statement by Michael Teeuw here.
Barcode Scanner to shopping list
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More or less have a barcode scanner attached to the pi via usb under the mirror and it would take scan data and add it to wunderlist as the actual product name.
I found this that could run separately, but couldn’t get it to install. I guess a module with an input box and you would put in wunderlist api keys as well as a upc database api key and it would do the rest.
Someone got this working on a pi zero, but the install instructions were to hard for me to figure out.
https://bcarrigan.com/2018/04/20/wunderscan/
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