Tweet the hashtag #isswave, your postcode/city, and your country (you can use country codes such as UK or US).
Here are some examples of valid tweets:
- #isswave E15 uk
- #isswave SW5 0TR uk
- #isswave 55210 us
- #isswave 34013 ita
- #isswave sydney australia
- #isswave paris france
- #isswave berkeley CA
- #isswave 3011 ch
The list of three letter country codes (ISO 3166-1 alpha-3 codes) can be found here
If you would like to make sure your tweet will be correctly processed, enter it in area below and make sure the found geolocation is correct.