The PayByPhone system, already in use at 250 of the city's metered spaces, enables drivers with NFC phones to make payments by tapping their handsets against a parking meter.

The San Francisco Municipal Transportation Agency (SFMTA) is currently in the process of deploying Near Field Communication (NFC)-enabled technology at all 30,000 of its metered street-side parking spaces that allow motorists to pay for parking via mobile phones. Installation began within the city's Castro District on Dec. 14, 2011, and the solution is already operational for 250 meters equipped with the NFC-enabled stickers, according to Paul Rose, SFMTA's media relations manager. With technology provided by PayByPhone, a driver can download and install an application to his NFC-enabled mobile phone, enabling him to pay for parking by tapping the phone against an NFC decal attached to the meter.