1. Badge

There are 12 LEDS (red, green, blue) and one RGB LED in the middle. Pre-defined patterns run at random, but when two or more badges "see" each other via the infrared port, they sychronize and play the same pattern.

2. TV-B-Gone

TV-B-Gone is a universal remote control device for turning off a large majority of the currently available brands of television sets. It was invented by Mitch Altman, and is sold by his company Cornfield Electronics. Mr. Altman kindly allowed to use his idea for the Balccon conference. Thanks, Mitch!

3. Password Manager

Password manager is the unit which generates, holds and types up to 10 independent passwords, each of them 15...20 characters long. Computer sees it as a standard USB HID keyboard, so it works with every computer which has a USB port, and requires no extra software installation. When you are asked to type the password, simply switch the unit ON, select the desired password and plug it in the USB port.

The similar project was described at https://hackaday.io/project/5588-hardware-password-manager

For more details, please download the PDF manual.