Patent ID: 9298955
Filing Date: 2016-03-29
CPC Classification: G06K

Claim Text:
1. A method for proximity assurance for a short range communication connection between a first device having a first accelerometer and a second device having a second accelerometer comprising: establishing the short range communication connection between the first and the second device to allow data exchange; creating a bump by bringing the first device and the second device into physical contact and recording the bump in the first and second accelerometer to generate a first and a second accelerometer history of the bump; generating a first value using the first accelerometer history and a second value using the second accelerometer history; exchanging the values between the first device and the second device using the short range communication channel; exchanging the accelerometer histories between the first device and the second device; verifying by the second device whether the first value agrees with the first accelerometer history and verifying by the first device whether the second value agrees with the second accelerometer history; and determining if the first accelerometer history matches the second accelerometer history in order to verify physical proximity.