Carefree days are over for Nest users, as Google tightens its security policies. The company will require an additional step when people try to log into their Nest account. "When a new login is initiated, you'll receive an email from accounts@nest.com with a six-digit verification code to be entered in order to successfully sign in," writes Google in a .

The security feature was announced earlier this year, and Google will start enforcing it this month. If you don't want to deal with emails, every time you log into your Nest account, there are two alternatives. You can consider migrating ...