Sensor-based authentication

A device comprising:

• a processing unit;
• a memory coupled to the processing unit and storing instructions thereon, the instructions, when executed by the processing unit, performing acts including:
• obtaining motion related sensor data, wherein the motion related sensor data includes time information of motion;
• removing at least one unexpected movement interruption comprising interference from background motion related sensor data from the motion related sensor data;
• determining a label of a behavior, wherein the behavior includes a time information of the behavior;
• associating the label with at least part of the motion related sensor data based on the time information of the behavior and the time information of motion;
• determining at least one trajectory level of comparable motion from the at least part of the motion related sensor data associated with the label;
• identifying a plurality of comparable motions corresponding to the label;
• for each comparable motion in the plurality of comparable motions, calculating a sum of at least one similarity value, wherein, the similarity value is calculated by comparing the comparable motion with another identified comparable motion in the plurality of comparable motions;
• and
• selecting a comparable motion with a maximum sum of the similarity value as a motion passcode corresponding to the label.

A computer program product being tangibly stored on a non-transient machine-readable medium and comprising machine-executable instructions, the instructions, when executed on an electronic device, performing acts including:

• obtaining motion related sensor data, wherein the motion related sensor data include time information of motion;
• removing at least one unexpected movement interruption comprising interference from background motion related sensor data from the motion related sensor data;
• determining a label of a behavior, wherein the behavior includes a time information of the behavior;
• associating the label with at least part of the motion related sensor data based on the time information of the behavior and the time information of motion;
• determining at least one trajectory level of comparable motion from the at least part of the motion related sensor data associated with the label;
• identifying a plurality of comparable motions corresponding to the label;
• for each comparable motion in the plurality of comparable motions, calculating a sum of at least one similarity value, wherein, the similarity value is calculated by comparing the comparable motion with another identified comparable motion in the plurality of comparable motions;
• and
• selecting a comparable motion with a maximum sum of the similarity value as a motion passcode corresponding to the label.