The method is for entering data into a computer device. A wearable device (10) is attaching to a hand (212). The device (10) has a lower unit (14) placed in a palm (106) of the hand and an upper unit (16) placed behind knuckles (17) of the hand and connected to the lower unit (14). A sensor (202) has...http://www.google.com.hk/patents/US20050179644?utm_source=gb-gplus-share專利 US20050179644 - Data input device
