| CPC G06V 40/172 (2022.01) [A24F 40/42 (2020.01); A24F 40/485 (2020.01); A24F 40/51 (2020.01); A24F 40/53 (2020.01); A24F 40/57 (2020.01); A24F 40/65 (2020.01); A61M 15/0001 (2014.02); A61M 15/002 (2014.02); G06T 7/70 (2017.01); G09B 21/00 (2013.01); H04K 3/00 (2013.01); A61M 2205/13 (2013.01); A61M 2205/3327 (2013.01); A61M 2205/3375 (2013.01); A61M 2205/3569 (2013.01); A61M 2205/36 (2013.01); A61M 2205/609 (2013.01); G01K 13/20 (2021.01); G01P 13/00 (2013.01); G06T 2207/30201 (2013.01)] | 26 Claims |

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1. A personal device configured for registration and later on authentication of an individual, the device comprising:
(i) a wave generator for transmitting waves towards the mouth of the individual or a portion thereof;
(ii) a sensor to detect at least a portion of reflections of the waves transmitted by the wave generator;
(iii) a memory configured to store at least one oral signature of the individual, and
(iv) a processor coupled to the sensor and configured to receive waves from the sensor, the processor configured to:
register an individual by: extracting from the received waves at least one oral signature, recording and storing the at least one oral signature of the individual on said memory, and associating the recorded and stored at least one oral signature with the individual;
upon an attempted use of the device by a subject, compare at least a portion of the received waves with an oral signature of at least one registered individual; and
authenticate the subject based on the comparison.
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