Immigrant and civil rights advocates are warning the City Council about privacy concerns over smart chips being added to the city's identity cards.

Many use their ID to access transportation, like the bus and train, as well as banking services.

Advocates say the smart chip could expose cardholders to surveillance and financial risks like data collection. They say this could particularly impact undocumented immigrants.

Advocates also shared a letter signed by 65 New York-based organizations expressing opposition to the smart chip.