Promo Codes is used as follows: You need to log in to your existing account at roadid.com or create a new account of your own; then, to select a product, you can browse the roadid.com product page to select a product and add it to your cart. Occasionally, they will offer you discounted products up to 50%. Then check out, click order, select the eligible Coupon Codes, and finally complete the payment. Plus, here's roadid.com's latest sale on October: Sidekick ID For Fitbit Garmin At Just $19.99 At Road ID.