For those that have enabled two-factor authentication (2FA) and also tend to use public wifi or travel on a regular basis, today's tip is for you.and#8232;and#8232; The whole point of 2FA is to use your smartphone to authorize a connection via text messaging, but that might not be possible in certain situations. and#8232;A great example is when you board a flight and connect to the in-flight wifi; when you try to log in, the text message with the special code isn't going to make it to your phone.and#8232; Just about every service that allows 2FA also has special codes that you can use to get in when your phone doesn't have a cellular connection.and#8232; The best place to learn where these special codes exist is the same place that you set up the 2FA for each account.and#8232;and#8232; Google, for instance, generates 10 one-time use codes that you can use for these situations.and#8232;and#8232; Keeping a copy of these codes on your phone, in your laptop bag on a sticky note or however you can safely store these codes is a great tip for road warriors. Here are some example instructions:and#8232;and#8232; Google:and#160;https://support.google.com/accounts/answer/1187538?hl=enand#8232;and#8232; Facebook:and#160;https://www.facebook.com/help/148104135383285and#8232;and#8232; Or you can try searching for "2-factor backup codes for XXXX" in a Google search with the XXXX representing the service that you are using.