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Encoding NDEF Records by Hand in Flutter — URIs, Text, vCards and Wi-Fi

by Ayesha Iftikhar dev.to

4 min read

Most Flutter NFC tutorials stop at "write a URL". When I built the encoding layer for an NFC app, I needed eleven record types, exact byte counts before writing, and records that every phone would read. Packages like nfc_manager give you the session and the tag; building the right bytes is still up to you. This post walks through four record types — URI, text, vCard and Wi-Fi — at the byte level,…

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