Being introduced to more than three people at a time makes it almost impossible for me to keep track of names and faces. Rather than continue with all of that shuffling-cardboard-across-the-table and mumbling ‘hello’, maybe it’s time for an up to date alternative to the business card.
Today’s invention is a ‘watch’ worn on the right wrist, which can wirelessly transmit, when brought close to another such device eg during a handshake, a small file of information about its wearer.

This would contain, in a standardised format, items such as
-name
-any evidence of past meetings
-mutual friends
-topics to avoid
-a thumbnail photo, for scrutiny later
-most likely icebreaker subject, etc.
The watch would contain enough storage for even a politician’s ‘working’ day (ie several hundred pressings of the flesh). Each file, once received, could be transmitted to a portable device (think Blackberry) which would then run a check quickly for additional up-to-date background information on the individual.
A wireless earpiece would be used to transmit snippets of (prioritised) text-to-speech output. This would need to be on-demand -perhaps when the user performs some unobtrusive gesture, like touching his/her ear.
This system would help avoid faux-pas and, with practice, smooth the meeting process. On shaking hands again, at the end of the meeting, names would once more get transmitted to earpieces for a more personalised leave-taking.
(Freemasons’ handshaking habits would be unaffected of course. What would it take to affect them?).