

If you signal in turn lanes or while switching lanes when no one is around you’ll build healthy habits of using your signal in all other appropriate times.
Signal every time you plan to deviate from your current lane of travel.
Also FFS, signal before you start to merge so that people know what the fuck you’re doing. Too many times I’ve ridden with people that got upset when no one is “letting them in” and they haven’t even bothered to tell people they want in.
No. When you enable 2FA Google gives you about 10 backup codes that will always work regardless of if you have access to your authenticator app.