@phnt @ins0mniak or use a piece of paper (and a copy of that paper in a safe place) - let's face it, they are so heavily invested in digital surveillance, the moment you "go full analog" (like Robert DeNiro said in Zero Day, something I found really cool) Google et al are powerless. Once you communicate over an analog two-way radio for example, there won't be someone listening, unless you're really important and they spend money on you.
These smartphone authentications are going to become a pain in the a**, this so called "digital transformation" is increasing, and at some point you will need a phone in a faraday bag, just in case you can't pay without one, or enter a parking garage and such things. I'm definitely going to fight it and not going to give in easily.