QR Ware is software that does such things:
Create a QR code from the data in the file.
Write the QR code decryption result to a file.
In terms of size, any data that can be stored in the QR code can be stored in the QR code.
Also, regardless of the QR code decoding result, it can be output to a file.
QR Ware is software that is created for use at such time.
In terms of security, portability, confidentiality, etc. “It is better to retain data in the form of QR code."
It is assumed to be used like this:
Hold data in QR code format.
When it is necessary to use it, decode the QR code and view (use) the contents.
Make the file data a QR code.
Decode the QR Code.
Output the decryption result to a file.
such things can be done easily.
Also, QR Ware assumes that what is stored in the QR code is as follows.
Strict handling is required.
What extreme confidentiality demands.
Therefore,
Put the QR code decoding result in a place such as "History".
If the decoding result of the QR code is URL, the browser is called.
If the decoding result is E-Mail address, the Mailer is called.
QR Ware have not done any of these things.
It have not done anything that may cause data leaks.
There is no function to read the QR code from the camera.
Decoding target is only the image of png file.