I just installed my new ecobee thermostat, set up an account with my email address, got it working on my phone, and life's awesome – for me. How do I get the registration code again for a second account? I'd like my family to be able to change the temperature from their phones too.
No need to create another account! The ecobee can only be registered to a single email address at this time. However - you can log into as many devices as you want using the same credentials. Share the email address and password connected to the ecobee account with family/ roommates/ friends so that they can also access the thermostat remotely.