Experts on inventory, tell me, what ruined reading the QR code?

Is there any opportunity while created QR codes to make it readable only after entering the password?? Doing inventory and decided to use QR codes, the user is all approved, but only requires protection(ostensibly so that only the elect knew the password and could scan).Thanks in advance!
June 14th 19 at 18:25
2 answers
June 14th 19 at 18:27
Solution
No way. QR code to count anyone can.
And to access information from this code (for example, the identity/login) is only one who has access to the database for this ID.

Storing the product information in the QR code - it is irrational for the following reasons:
1. A large amount of data, and the area can be limited.
2. The code will be fixed after printing and stickers on the packaging/product and attached to it logically.

Easier - to use only ID-shnik without any other information inside a QR code. And all the rest to store in the database.
June 14th 19 at 18:29
You can encrypt information in QR code, and without the correct password(encryption key) cannot be decrypted. There are many modern protocols(algorithms) encryption. The QR code itself is just a way of transmitting information, and what to convey for you to decide.

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