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iOS NDEF Record Compatibility

Introduction

NDEF (NFC Data exchange format) is a method of transferring (relatively small amounts of) information from a passive or actively emulated tag by way of "records" which specify the type of information is being received and the function it is meant to have.

iPhones do not have a full suite of NDEF compatibility, the reason for this is unknown (to me at least), what this means is the background polling on iPhones will not interpret some specific record types, with compatible NDEF records, a notification will pop up directing the user to follow the received data into its respective app to complete whatever action was intended by the record.

Compatibility Table

Below are the options offered by NFC Tools on IOS for NDEF Encoding, some of the options below are other record types but with a specific function IE social links are just URLs.

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Why?

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

Exporting your 2FA tokens from Authy to transfer them into another 2FA application

IMPORTANT - Update regarding deprecation of Authy desktop apps

Past August 2024, Authy stopped supported the desktop version of their apps:
See Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August for details.

And indeed, after a while, Authy changed something in their backend which now prevents the old desktop app from logging in. If you are already logged in, then you are in luck, and you can follow the instructions below to export your tokens.

If you are not logged in anymore, but can find a backup of the necessary files, then restore those files, and re-install Authy 2.2.3 following the instructions below, and it should work as expected.

Aligning images

This is a guide for aligning images.

See the full Advanced Markdown doc for more tips and tricks

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-git tag -l | xargs git tag -d
-#Fetch remote tags.
-git fetch
-#Delete remote tags.
-git tag -l | xargs -n 1 git push --delete origin
-#Delete local tasg.
-git tag -l | xargs git tag -d

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