Your phrasing, "Broadcast any document into your location" doesn't explain what you do. I'm probably slower than the average hacker news reader, but that being said, I don't get it...especially after watching the video (which explained it to me). Something like, "Location-based document sharing" is a very functional explanation, but lacks lacks creativity. But, you get the point. A one-liner has to be both easy to remember AND something that when I repeat it to a friend, they get it too.
As another commenter insinuated, generally, the product applies to a lot of people, only a very small percentage of the time. I highly recommend you target carefully. Maybe the convention audience (thought probably not), or college recruiters. Be something specifically important to someone first and grow from there.
Caution: this has been done with QR codes. Check out why others that have tried solving this problem a different way have been or weren't successful.
Find out, as early as possible, how much people would be willing to pay for something like this.
Best of luck,