I have heard alot of ladies say they use the coupon off their smartphone, so I really hope you can. I would be paranoid and print a coupon off to take just in case they won't take the smartphone coupon. :0)
You are welcome. If you ever need a YC coupon just google Yankee Candle coupon and start looking. They have cut back on coupons. They won't let you use a coupon online anymore for sale items, just full price items.
Hope you get lots of yummy tarts!