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We can combine the two ideas: Print a trademarked image on top, and then print a digitally signed digest of that image (as a barcode) on that same top. The co
by Pitarou 13y ago
We can combine the two ideas:
Print a trademarked image on top, and then print a digitally signed digest of that image (as a barcode) on that same top.
The coffee maker verifies the signature, and verifies that the digest matches the image.
This also makes it easy to control who else can manufacture the coffee pods.
- joezydeco 13y agoIt's a great idea, but probably over complicated for the environment that this coffee maker operates in. You'd also have a tricky optical problem capturing an image of the cap at close range (such as inside a closed lid)