Today is free redbox Monday. In order to get your code which is valid for one time use only and cannot be shared you need to sign up for text message alerts at Redbox.com and you will receive your unique code via your cell phone. Be sure to also sign up for email alerts which will be towards the bottom lefthand side of the page. You will occassionally get unique one time use codes to your email address as well. Go here to find a redbox near you. Go to the kiosk start with rent with promo code, then enter code the code sent to you via text message. Be sure to return the movie by 9 p.m. the following day to avoid being charged $1 for each additional day.
Also if you have never used redbox before there are a few promo codes that can be used if you can't make it to redbox today or if you want more than one movie. You can use DVDONME, BREAKROOM at any location. Then these are location specific DVDKROG (valid at Kroger and ALL affliate stores), DVDATWAG (valid at Walgreens only). These codes work one per debit/credit card.