Is there a limit on the number of cards I can have? April 18, 2019 08:02 Updated Follow Yes, we allow one card per person. Related articles When should my card arrive? How much does it cost? Is the HyperJar card a contactless card? Can I use my HyperJar card at a shop if I haven’t set up a Jar with them? What happens if I lose my card? Comments 0 comments Please sign in to leave a comment.