Apologies for the confusion, but this is limited to one code per account. Friends can write in with their code to have it applied!
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Apologies for the confusion, but this is limited to one code per account. Friends can write in with their code to have it applied!