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It'd be handy for tracking baggage in the travel industry. Your bags are handled by numerous different companies/parties at different points and through a ton of locations.

Blockchain would be excellent for verifying that a bag has been received and processed at a certain place.

Lots of the large GDSs such as Sabre/Amadeus/Travelport are actively looking into this.

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Exchanging loyalty points (airline miles, credit card points, etc) is where travel is probably most interested in blockchain right now.

For your example, cargo that changes hands between entities might be more interesting. US Airlines carry a fair amount of post office mail, for example.

why would blockchain be excellent for that? why not just a regular db?

Good question. I'm not an expert by any means, but would expect that the immutability of the record prevents a party passing the buck on who is responsible for the loss of luggage.

But I suppose a DB could do that too. Maybe it's all hype ^^

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