This special QR code with sound wave keychain will made your day. Looking at the shape of the soundwave and recalling her/his words, your heart is smiling. QR codes give you quick access to any form of information. More than this add a soundwave for your keychain. A personalized QR Code keychain could be the perfect gift for your family, boyfriends, girlfriends. A Special Gift idea for Memento, Wedding, Birthday, Anniversary, Valentines Day, Mothers' Day, Fathers' Day, Thanksgiving Day, Graduation, Housewarming and Gag gifts. You can use the Camera app on your iPhone, iPad, or iPod touch to scan a QR code, for the Android phones users, scan the QR codes with your QR scanner!