I have been using a 2nd phone since the beginning of QR codes. I have it as a dormant work phone at present, so I just started using it. Flipped my name around and use work address and have had no problems, no SMS from anyone and no contact from authorities. If they are going to contact me by using the phone then I will answer as that person. Think the QR code is much more efficient than the Covid Safe app BS. I actually want it used widespread. I book using that phone and have signed in using the false name. At the end of the day I want to know if there is any Covid issues wherever I have been. Don't we all or is secrets better than safety😎