hot tip: zbarimg You can store the TOTP seeds in more compact form by converting QR code screenshots to alphanumeric using zbar barcode tools. In my experienc

hot tip: zbarimg You can store the TOTP seeds in more compact form by converting QR code screenshots to alphanumeric using zbar barcode tools. In my experience it has difficulty parsing some QR codes created using CSS due to tiny borders between blocks. Those can be fixed by applying a small gaussian blur followed by sharpening (use imagemagick for maximum automation) to fill out the borders. Edit: packages available in Ubuntu (zbar-tools) & Fedora (zbar), source code at https://github.com/mchehab/zbar https://github.com/mchehab/zbar