Patent ID: 8907768

Claim:
A method of conducting an access transaction, the method comprising: receiving, at a server computer, first interaction data including first location data and first sensor data from a mobile device, wherein the first mobile device comprises a first processor and a first motion sensor coupled to the first processor, and wherein the first sensor data represents a first external force on the mobile device as measured by the first motion sensor and caused by physical contact during a physical interaction; receiving, at the server computer, second interaction data including second location data and second sensor data from an access point device, wherein the access point device comprises a second motion sensor and a second processor coupled to the second motion sensor, and wherein the second sensor data represents a second external force on the access device as measured by the second motion sensor and caused by physical contact during the physical interaction; determining, with the server computer, whether the mobile device physically interacted with the access point device by comparing the first interaction data and second interaction data, wherein the first sensor data is compared with the second sensor data after comparison of the first location data and the second location data indicates that the first location data corresponds to the second location data; if the mobile device and the access point device physically interacted, initiating communications between the mobile device and the access point device; and sending, with the server computer, an access permission message to one of the mobile device or the access point device, wherein the access permission message indicates whether or not a holder of the mobile device is permitted to access a secured area.