CameraFileCopy
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 cimbar.org. 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.
Versions
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.
Download F-Droid-
arm64-v8aarmeabi-v7ax86x86_64This version requires Android 5.0 or newer.
It is built by F-Droid and guaranteed to correspond to this source tarball.
Download APK 9 MiB PGP Signature | Build Log
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arm64-v8aarmeabi-v7ax86x86_64This version requires Android 5.0 or newer.
It is built by F-Droid and guaranteed to correspond to this source tarball.
Download APK 9 MiB PGP Signature | Build Log
-
arm64-v8aarmeabi-v7ax86x86_64This version requires Android 5.0 or newer.
It is built by F-Droid and guaranteed to correspond to this source tarball.
Download APK 9 MiB PGP Signature | Build Log