1) Since many people just take a picture of the card now instead of saving it, make fancy brushed metal cards that you keep and re-use, handing to people to take the picture with.
2) Cards printed with appearing ink. Hand someone a business card and it slowly materialized your contact information.
3) A digital business card that updates as your personal information changes.
4) 3d printed figurines that represent the field you’re in. Each figurine is a business card.
5) Resume smart glasses. When worn, user sees an augmented reality that embeds your story into the world around them.