CNN iReport will be visiting dmexco, the leading international expo and conference for digital business, in Cologne, Germany, on September 21 and 22. The conference will bring people from all over who are interested in digital marketing, and gives us a great opportunity to explore how the digital world is developing.

For those of you attending dmexco or veterans of other big conferences like SXSW or Comic-Con, we want your top tech-savvy tips for navigating a convention. Whether you monitor Twitter trending topics to find out the next cool thing to attend, or use Foursquare to let others know where you are, we want to hear your secrets. Upload a video – 1 minute max – showing us your best techy tips.

And, if you'll be at dmexco this year, be sure to share your stories on the latest developments in the digital world from the conference and stop by the iReport booth.

Update: This assignment is now closed. Thank you for your submissions!