Nationwide Building Society in the U.K. has deployed contactless payment technology to help raise money to fight homelessness.

NBS, the U.K. equivalent of a credit union, and the Bath Business Improvement District, are using smart window technology to raise money for the Good Start Tap to Donate campaign, which helps eradicate homeless in Bath and North East Somerset through the Julian House Good Start Fund. 

"At a time when many people don’t have spare change or may not wish to hand it directly to someone who is homeless, having a contact point in the window of the branch has bridged the gap,” Stephianie Pritchard, branch manager at NBS, said in a press release. "As a branch we are very much here for the community. This novel way of raising money for a fantastic cause is a great example of how technology is playing a role in helping society one tap at a time."

The system works using a smart window poster that sits next to a cash machine at the Union Street branch of NBS. Customers and other pedestrians may tap to pay a default amount of 3 pounds ($3.93) using a contactless device instead of handing the funds directly to the homeless, who often congregate at the ATM.