N.J. Stat. Ann. § 19:15-32

Thereupon the member of the board having charge of the ballot box, without displaying any part of the face of the ballot, shall remove the coupon from the top of the ballot and place the ballot in the box and the coupon on a file string. The member of the board having charge of the ballot box shall keep the ballot in full view of the voter and the other election officers until it is deposited and the voter may take hold thereof, with the member of the board having charge of the ballot box, until it is actually deposited.