老年痴呆症患者可能会出现随意走动的症状，如果没有被家人或看护者及时发现，他们就很容易走丢或是发生意外，甚至还会有生命危险。为了让患有老年痴呆症的姥爷不再走丢，一位名叫肯尼斯·志之冢的美国少年设计出了一款可穿戴式运动传感器，不仅为他的姥爷，更为广大老年痴呆症患者送去了“平凡”而又温暖的守护……

Kenneth Shinozuka was six when a policeman brought his grandfather home， who'd been wandering the freeway in his pajamas.

His grandfather had always been there for Kenneth， reading and singing to him and taking him for walks on the beach. Now his grandfather needed help. Getting lost wasn't the first sign he had Alzheimer's， but it was the most dramatic. Kenneth vowed to do everything he could to protect his beloved grandpa. He invented a motion sensor that sends a signal to a caregiver's smartphone when a patient steps out of bed.

More than 5 million Americans have Alzheimer's and every 67 seconds someone in the U.S. develops the disease， according to the Alzheimer's Association. The disease takes its toll on2） 15.5 million caregivers， burdened with the stress of caring for a loved one with the disease. Sixty-five percent of all Alzheimer's patients wander， according to the association. Kenneth's aunt， who has a PhD in pharmaceutical3） science， had to quit her job as a professor to care for his grandfather， Kenneth's mother said in an interview.

Kenneth got the idea for a motion sensor one night when he was watching his grandfather and he started to get up to wander.

"As soon as he stepped onto the floor， I had this sort of light bulb moment， sort of a eureka4） moment."

肯尼斯·志之冢六岁时，有一次一位警察把他的姥爷送回了家，此前穿着睡衣的姥爷一直在高速公路上四处游荡。

肯尼斯的姥爷曾经一直陪伴在他的身边，给他读书、唱歌，还带他到海滩去散步。现在，姥爷需要帮助了。虽然走丢并不是他患上老年痴呆症的首个症状，但却是最让人揪心的。肯尼斯发誓要尽所能保护心爱的姥爷。他发明了一款运动传感器，它可以在患者下床时向看护者的智能手机发送信号。

美国老年痴呆症协会表示，美国有超过500万的老年痴呆症患者，而且每67秒就有一位美国人患上老年痴呆症。这种疾病为1550万看护者带来了不小的麻烦，他们承受着照料患有该疾病的亲人的压力。协会还称，在所有老年痴呆症患者中，有65%的人都会到处乱走。肯尼斯的妈妈在一次采访中说，肯尼斯的姨妈是一位拥有药物科学博士学位的教授，为了照顾肯尼斯的姥爷，她不得不辞去了自己的工作。

一天晚上，肯尼斯注视着姥爷，姥爷则开始起身要走动，就在那时，肯尼斯想到了运动传感器这个点子。

“他的脚刚一踏上地板，我就突发灵感，就是‘我发现了！