A business card is a physical object that a potential prospect leaves the encounter with. Your brand stays with them. If you meet a prospect and exchange email addresses and phone numbers you each walk away with another contact on your mobile phone -- it ends there. If you hand over a creative business card that makes a great impression that person is likely to show it to other people -- putting you and your brand in front of additional prospects.
A professional business card needs to fit the branding of your business, display your logo prominently, and highlight your website and contact details, so the people you connect with can find you online, on social, or via email.
You want your business cards to make an impression. They should have a creative design that makes your business stand out. There are a number of styles of creative business cards, that range the gamut from expressive to more minimal design. Your business card should match the brand of your business and be creatively aligned with your goals.
This is a great concept as virtual business cards are the high tech eco friendly option to paper business cards as using paper is not very eco friendly as trees are cut down to make paper. Moreover the business individuals do not need to carry a stack of paper business cards in their pockets or wallets anymore. Also one will never run out of these types of business cards.