詞匯

1. sensor 傳感器

2. obstacle 障礙，阻礙

3. alternative 其他的，另外的

4. decade 十年

5. available 可獲得的

Smart shoes for blind people

Austrian company Tec-Innovation recently unveiled smart shoes that use ultrasonic sensors to help people suffering from blindness or vision impairment to detect obstacles up to four meters away.

Known as InnoMake, the smart shoe aims to become an alternative to the decades-old walking stick that millions of people around the world depend on to get around as safely as possible. The currently available model relies on sensors to detect obstacles and warns the wearer via vibration.