Parties are fun, but getting past a phalanx of publicists and event planners can be quite a production, even for people with invitations. Swiss startup founder David Becker realized this when he was throwing a party to fête one of his products in 2008. “We had 1,000 people on the list and couldn’t get them in fast enough,” Mr. Becker told Betabeat. The problem is always the same … the paper guest list.”