| 摘要 |
An electronic device is provided which includes a light emitting unit for emitting light, and a light detection unit which is irradiated with the light emitted by the light emitting unit and which includes an optical sensor for outputting an electric current corresponding to the brightness of the light. The light emitted by the light emitting unit is used for other purpose than being irradiated to the light detection unit. By including such configuration, even in the case of including an authentication means by using vein authentication which is a biometric authentication, an increase in the size of the housing can be suppressed.
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