How do you Match 2 different pictures in a memory game

MIT App Inventor Help
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How to Matching 2 different images in a memory game

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Look into how others are doing it

https://community.appinventor.mit.edu/search?context=topic&context_id=136318&q=Memory%20%23app-showcase%20&skip_context=true

Taifun

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Welcome

A tutorial that might help you:

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Don't you mean how to match two identical images?

One way would be to read the meta data of the images

Another would be to compare a small sample of pixels from each image.