A team of Google engineers in Japan created a keyboard in the shape of a keycap that can be worn as a hat. The device contains a 6-axis inertial sensor that can read the hat’s positioning.

But there are some strings attached. When finished, these hats are delivered to organizations that help the homeless. The 88-year-old Underwood helped start the group now known as the Mad Hatters.

A security engineer who reverse-engineered the family of chips from Infineon showed a Black Hat audience how he cracked the chip and accessed its data.