Apparatus & method for multi-device authentication

An apparatus comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed by the at least one processor cause the apparatus at least to:
• receive a request to authenticate a first device;
• obtain information identifying a first set of sensors associated with the first device;
• obtain information identifying a second set of sensors associated with a second device;
• obtain correlation data indicating correlations between sensors in the first set of sensors and sensors in the second set of sensors;
• select a first sensor from the first set of sensors and a second sensor from the second set of sensors based on the correlation data;
• and
• authenticate the first device in response to determining that data from the first sensor is correlated with data from the second sensor.

A method comprising:

• receiving a request to authenticate a first device;
• obtaining information identifying a first set of sensors associated with the first device;
• obtaining information identifying a second set of sensors associated with a second device;
• obtaining correlation data indicating correlations between sensors in the first set of sensors and sensors in the second set of sensors;
• selecting a first sensor from the first set of sensors and a second sensor from the second set of sensors based on the correlation data;
• and
• authenticating the first device in response to determining that data from the first sensor is correlated with data from the second sensor.

A non-transitory computer readable medium comprising program instructions that, when executed by an apparatus, cause the apparatus to perform at least the following:

• receiving a request to authenticate a first device;
• obtaining information identifying a first set of sensors associated with the first device;
• obtaining information identifying a second set of sensors associated with a second device;
• obtaining correlation data indicating correlations between sensors in the first set of sensors and sensors in the second set of sensors;
• selecting a first sensor from the first set of sensors and a second sensor from the second set of sensors based on the correlation data;
• and
• authenticating the first device in response to determining that data from the first sensor is correlated with data from the second sensor.