QR code auto configuration - link expiry

[gmeritum]

Hello, I have a question about auto config with QR code. I send to employees QR code for auto configuration 3CX Android Client on private mobile phone. QR code it is a link for auto config, ex.
HTTPS://DOMAIN_VOIP_3CX:5001/P/BP7V***TY62ZB/LHP4V***QF2103

If I want disabled access (ext) for user on private phone I will change sip password for ext on 3CX mgm console. Great. But if the employee still have old QR code (on mail attachment, save png or take photo QR) can do again configure account on private mobile phone without new password. Should these links not be expire and generate new if I change sip password, sip username, etc?

Only one option to deactivate QR code is permanently remove user (ext). I don't think that makes sense.

Have any ideas? thanks for the help

 

[gmeritum]

ofc, my platform

• 3CX Version 16.0.4.493 ENT
• Server OS, Win 2012 R2

 

[JohnS_3CX]

Delete the extension and recreate it. This will invalidate anything you sent to the employee (or ex-employee that you don't want to give access to any more).

Apps cannot be disabled completely, but recreating the extension will cause the old QR to become invalid