N.Y. Elec. Law § 5-800
In addition to any other means of voter registration provided for by this chapter, the state board of elections shall establish and maintain an electronic voter registration transmittal system through which applicants may apply to register to vote online. The state board of elections shall electronically transmit such applications to the applicable board of elections of each county or the city of New York for filing, processing and verification consistent with this chapter. In accordance with technical specifications provided by the state board of elections, each board of elections shall maintain a voter registration system capable of receiving and processing voter registration application information, including electronic signatures, from the electronic voter registration transmittal system established by the state board of elections. Notwithstanding any other inconsistent provision of this chapter, applications filed using such system shall be considered filed with the applicable board of elections on the calendar date the application is initially transmitted by the voter through the electronic voter registration transmittal system.
N.Y. Elec. Law § 5-800