You need a recent Burger King receipt to earn a free Whopper code. Go to MyBKExperience.com, type in the restaurant number and survey code on your receipt, and fill out the short survey. When you're done with the survey, you'll get a coupon that lets you get a free sandwich. This code is usually good for about 30 days.

The aim of the Burger King Survey Portal is to collect opinions on Burger King's food and service and customer preferences on what they like and what they dislike so that they can improve their store-experience on future visits.

Burger King created www.mybkexperience.com utilizing Qualtrics, a robust cloud-based survey technology. Through Burger King Experience Portal, they come to know how customers feel about restaurant’s food quality, taste, menu items, customer service, price, ambience, cleanliness, staff behavior, and delivery speed.