data source protocols
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- USB: FTDI, MTP, … (works, but not always, e.g., GoPro)
- serial (???)
- infrared (???)
- WiFi (per-device or per-company REST API)
- SD card (works)
Bluetooth, BLE(unsupported)
Trend: moving to Bluetooth.
Current solution? Download with Android/Linux, shuffle around file formats.