N.Y. Comp. Codes R. & Regs. tit. 9 § 4820.16
There shall be two persons present at the receptacle from which the objects, or balls are drawn; one person shall remove the ball from the receptacle, observe the letter and the number, and hand it to the other person who shall raise the ball to display the letter and number to the players and announce the letters and the complete numbers being called accurately and audibly to all players present. Where there is an audio-video system in operation, the caller may be the sole person present at the receptacle from which the objects or balls are drawn, provided the caller positions each ball before the camera to clearly display the letter and number appearing on each ball to the players via the video monitor(s). When an audio-video system is in operation, the caller shall announce the next letter and number in its entirety while the image of that letter and number are clearly displayed on the video monitor(s) and shall raise the ball to display the letter and number to the players before placing it in the appropriately numbered space at the caller's station. The caller shall not be required to handle the ball when a hands-free bingo receptacle approved by the commission is utilized, but shall be required to announce both the letter and the number while the image of that letter and number are clearly displayed on the video monitor(s). Speed-up games such as the wild number game in which players mark those numbers appearing on their face-cards whose second digits match the wild number's single digit number (or its second digit if the wild number is a two-digit number) so designated by the licensed authorized organization are permitted only when the bingo system utilized has a wild number function that automatically causes the bingo display board to illuminate the wild number and all numbers corresponding with it. Once removed, no ball shall be returned to the receptacle until after the conclusion of the game.
N.Y. Comp. Codes R. & Regs. Tit. 9 § 4820.16