Step 1: Create new contact on your phone, using a message as the contact's name.
Step 2: Send the business card via Bluetooth (your phone will search for all devices within range)
Step 3: Choose who you send it to, and listen out for a received message.
Step 4: Continue to send lighthearted messages and watch their reaction.
Step 5: Introduce yourself and make a new friend!
Tips:
Works better in busy areas. Better still in places like stations or near mobile phone shops.
Be nice - don't send malicious messages or cause panic or worry!
Try sending funny pictures to help alleviate boredom on a long train journey.