Special finishes can make your cards stand out. Metallic ink, foil blocking, and spot-UV are special finishes that are perfect for helping your cards stand out in a crowd. These details can maintain a simple, classic look but add a level of elegance and memorability to your business cards.
Two individuals with their heads buried in their phones typing away woould not create any kind of significant memory of the encounter. You can easily transfer the information from a business card to your mobile device after the conversation.
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.
The most common business card size is 84 mm by 55 mm, or 3.5 inches by 2 inches. You can go bigger, but if you do your cards are less likely to be kept. If you go smaller, you have a better shot, as long as they still fit in a typical card folio. Any non-traditional size is going to cost you more money.