Even the most exciting, perfectly executed event has its headaches. Whether it's a small tech conference or an EDM concert, there's seemingly no way around the long lines, limited toilets, and need to carry around a bunch of cash (or else get hit with exorbitant ATM fees). But what if we could at least get rid of paper tickets and the long lines they create?

RFID bracelets. In lieu of printing tickets, picking them up will call, or scan a little barcode on their smartphone screens, visitors can wear a bracelet containing a tiny RFID (radio frequency identification) chip.

This technology is already in use at some music festivals and other large public events.

Using wearable sensors instead of paper tickets presents a few obvious advantages for people who organize and manage events: For one thing, you cannot make a bogus copy of an RFID tag that has your identity tied to it. But some of the perks are less immediate, yet potentially priceless. With enough adoption, wearable "tickets" will let event organizers better understand the flow of foot traffic at an event, making it easier to plan the layout and know where to put things like concessions and port-a-potties.

The wristbands can also be used by vendors at events for cashless payments. This is a neat perk, also available through wearable devices like the Apple Watch and Android Wear devices, but it can have a big impact on the overall experience of attendees by keeping the lines moving. Taking out cash and making change may take a mere two minutes, but that time adds up with thousands of people in attendance.

Anyone who's ever stood in line at a food truck at a music festival knows how painful those waits can be, especially when you're eager to get back to the main stage.