1. How to send a distress signal from your suit using Morse code and cufflinks
1. Attach the iCufflinks (£140, firebox.com). They’re silver, with a glowing Mac power icon.
2. Using the open-source software, programme the icon to flash SOS – three short flashes, three long and three more short.
3. Your companions are now duly warned that the free bar is closed/boss is coming.