Imagine not having to carry and collect business cards any more. Cardect, a Melbourne start up, has designed a way for your business card to be swiped by a smart phone and stored.
http://www.startupdaily.net/2016/04/melbourne-startup-cardects-smart-business-card-transfers-information-tap-phone/
A business card that’s really smart

Business cards remain one of the most important ways you can generate interest in your business by figuratively placing your business in front of as many possible customers as possible. If you were to stop and think about it, you would probably agree that these little cards are like a personal ad for your business!
https://stickers2go.co.uk
Good point! I recently heard that stickers are very popular with startups now. Maybe you should post this idea separately on IdeaSpies