Authentication by transmitting information through magnetic fields

A system comprising:

• a kiosk device comprising one or more processing devices and one or more storage devices storing instructions that are operable, when executed by the one or more processing devices, to cause the one or more processing devices to perform operations comprising:
• capturing, using one or more sensors of the kiosk device, first information about a user attempting to access the kiosk device;
• changing, by the kiosk device, one or more parameters of a magnetic field generated by the kiosk device to encode identification information of the kiosk device into a magnetic signal that is detected by a mobile device associated with the user,
• wherein the magnetic signal comprises frequency shift keying (FSK) modulated magnetic waves decodable by a receiver in the mobile device via use of aliasing, wherein frequencies used in the FSK modulated magnetic waves are higher than a sampling rate associated with the receiver in the mobile device;
• receiving from one or more servers, second information identifying a user of the mobile device that detects the changes in the one or more parameters of the magnetic field;
• verifying, based on the first information and the second information, that the user attempting to access the kiosk device is the user of the mobile device;
• and
• responsive to verifying that the user attempting to access the kiosk device is the user of the mobile device, granting the user access to the kiosk device.

One or more non-transitory computer-readable storage devices coupled to one or more processors of a kiosk device and having instructions stored thereon which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:

• capturing, using one or more sensors of the kiosk device, first information about a user attempting to access the kiosk device;
• changing, by the kiosk device, one or more parameters of a magnetic field generated by the kiosk device to encode identification information of the kiosk device into a magnetic signal that is detected by a mobile device associated with the user,
• wherein the magnetic signal comprises frequency shift keying (FSK) modulated magnetic waves decodable by a receiver in the mobile device via use of aliasing, wherein frequencies used in the FSK modulated magnetic waves are higher than a sampling rate associated with the receiver in the mobile device;
• receiving from one or more servers, second information identifying a user of the mobile device that detects the changes in the one or more parameters of the magnetic field;
• verifying, based on the first information and the second information, that the user attempting to access the kiosk device is the user of the mobile device;
• and
• responsive to verifying that the user attempting to access the kiosk device is the user of the mobile device, granting the user access to the kiosk device.