I have a friend who's 6'6 (about 200cm) and every time we find a spot in the crowd to hear a concert I can hear people behind us tick in anger. Turns out, this problem is way more common than we assumed. Dominic Wilcox, however, has just created something that should help people overcome their height disadvantage -- the One Foot Taller Periscope glasses. As you might've already guessed by its name, this device allows the wearer to see 'one foot taller' (30.5cm) than their normal eye level.