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use your camera to transfer data – even in airplane mode
Using animated bar codes, it's possible to send data over the air using only the camera. This app is the barcode decoder (receiver). An encoder (sender) can be seen at

With CameraFileCopy it is possible to receive data over the camera as a one-way data channel. It does not use any antennas (wifi, bluetooth, nfc, ...) or other tricks. Notably, this means it works just as well in airplane mode.

The app reads animated cimbar codes. Nearly all the interesting logic is from libcimbar – included via a git subtree. The sender component of cfc is a cimbar encoder -- such as Navigate to that website (or use libcimbar's cimbar_send to generate barcodes natively), open a file to initialize the cimbar stream, and point the app+camera at the animated barcode.


Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

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  • Version 0.5.11 (7) suggested Added on 2022-06-05

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.

    Download APK 9 MiB PGP Signature | Build Log