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I thought about this once... one of the added benefits would be that stores and restaurants could automatically be multilingual

you'd probably have to RFID the stock in a retail setting. I feel that restaurants are a better place to start (on account of less fluidity in their offerings)

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That's a nice side-effect, yes!

Restaurants are an easier place to start, and in fact there are some services which already have databases of restaurants' menus.

As for RFID - I think a lot of people go there at first when discussing a solution to this problem. It might work just fine for smaller shops but in order to get it all over you need it built into the supply chain from the moment something steps out from being manufactured.

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