You might be thinking: "Why not just use an SD card reader?"
You can. But the SD card method is messy. Flipnotes copied via SD card are often locked with DRM (Digital Rights Management). If you copy a .PPM file directly from the SD card, it will not open in an emulator or a viewer like Sudomemo (the fan-run successor to Flipnote Hatena). The file is encrypted to your specific DSi console ID.
Mobile Link bypasses the DRM.
When you send a flipnote via Mobile Link, the DSi decrypts the file on the fly and sends a clean, usable .PPM file. This file can be:
In short, Mobile Link is the only legal-ish way to decrypt your childhood animations without modding your console (though you are still using homebrew software on the PC side). flipnote studio mobile link
In Japan, mobile carriers like DoCoMo and SoftBank had "Flipnote" capable phones. You could animate on your DSi and instantly send the file to your phone to use as a ringtone, screensaver, or share via early SMS. In the West, the feature was essentially a ghost—present in the code, but with no compatible phones to use it with.
First, let's clear up a common misconception. Flipnote Studio Mobile Link is not a standalone mobile app you can download from the iOS or Android store. Instead, it is a hidden connectivity protocol built into the Nintendo DSi version of Flipnote Studio (and later, Flipnote Studio 3D on the 3DS). You might be thinking: "Why not just use an SD card reader
The concept was revolutionary for its time (2010-2012):