Show HN: Knock to fake an in-come call(itunes.apple.com)2 points·by phatle·12 ปีที่แล้ว·2 commentsitunes.apple.comShow HN: Knock to fake an in-come callhttps://itunes.apple.com/us/app/knocktocall/id854896251?ls=1&mt=81 commentsPost comment[–]nemasu·12 ปีที่แล้วreplyHeh, interesting. Is the knock detected by mic or gyro?[–]phatle·12 ปีที่แล้วreplyBy gyro and an algorithm. Thank you for your downloading.:)