Sandbox+Meruert

What loyalty system do they currently use? Include a picture and description of the loyalty card plus system they use

1) Nectar loyalty card 2)

http://www.dailymail.co.uk/news/article-1335092/Sainsburys-worker-stole-loyalty-card-points-7m-worth-groceries.html

3) Nectar is the most popular and the largest loyalty card scheme in the U.K.