What are the ways of exchange of information between the Android device directly (without using Internet)?

Interested in ready-made library, or use the standard API.
July 8th 19 at 15:52
1 answer
July 8th 19 at 15:54
AcessPoint Wifi, Bluetooth, NFC, IR, QRcode
And it is possible links? I just have no idea what to Google. - charity84 commented on July 8th 19 at 15:57

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