At most of the business mixers that I've gone to people later add the contacts to LinkedIn, at which point they can grab a vCard if they need to import it elsew

At most of the business mixers that I've gone to people later add the contacts to LinkedIn, at which point they can grab a vCard if they need to import it elsewhere. It might be worth looking into the LinkedIn API to see if you can try to get a similar workflow with Bump.