Are you going to conference or an event?
How about using text message survey (SMS Survey) to setup appointments with potential clients?
How can I use Text Message Survey to setup appointments?
Create a text survey campaign using your TxtImpact account. You can provide welcome message, series questions such as their name, email address, preferred meeting time, best number to contact them, and have a closing message to confirm receipt of appointment request and provide any information for further interaction.
Don’t forget to configure your email address, where you like to receive all appointment requests.
For complete instructions on how setup Text mobile survey online: http://mzone.TXTImpact.com/mserver/help/info/How-to-setup-Text-Survey.htm
For more information on Text Message Survey.