Ez-link users can now use the card for another purpose: Donating to charity.
Five MRT stations - Orchard, Somerset, Tiong Bahru, Yishun and Bishan - have interactive posters asking for donations. By tapping an ez-link card on the poster, a dollar will be deducted.
Those who wish to make larger donations of $20, $50 or $100 can use their smartphones to scan the QR code on the posters.
The inaugural campaign, under the Care & Share Movement announced last month, is expected to last a year.
As part of the movement, Minister for Social and Family Development Chan Chun Sing announced Friday that the Government will match funds raised by the Community Chest and voluntary welfare organisations (VWOs) from next month to the end of next year.
The money raised by the movement will help some 250 VWOs upgrade their services to meet rising needs in the social service sector in 2015 and beyond. They can be used to fund new programmes and facilities, and training.
"As we grow economically and become a more secure society, we also like to have a balanced portfolio where socially, we also grow to become a more cohesive society," said Mr Chan.
The movement was launched in the lead-up to the Republic's 50th birthday celebrations in 2015 to encourage Singaporeans and organisations to give more of their time and money to help the needy.