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That is a unicode character, many, but not all of which are allowed in URLs. 🌐 is U+1F310 They could also have put 🌎U+1F30E 🌍U+1F30D 🌏U+1F30F or any other unicode character in their URLs. Lots of detail here: http://stackoverflow.com/questions/2742852/unicode-characters-in-urls


I agree with @someone in that QR code is better and faster solution in exchanging some kind of data and agree with @David too ,in that it's not the best for some other data types. good discussion: What are the key differences between QR codes, NFC, Bluetooth and RFID? I think you should determine your app scope.for example it's goal can be exchanging short ...

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