To unlock the new Hope for Homeless badge, all you have to do is follow Pret on foursquare and then check into one of their United Kingdom locations. You will then earn your shiny new badge and see the following message:For every check-in, Pret will donate 5p to homeless charities with a goal of donating £300,000 for the campaign.
Thanks for checking in and helping Pret A Manger reach its goal of £300,000, to go toward breaking the cycle of homelessness. Seasons Greetings!
Good luck and enjoy your sandwich(es)!