Complete the following passage using the appropriate words from the box below.

A computer __________¹ device is a __________² used to measure an intrinsic __________³ trait, usually for purposes of __________⁴. Biometric devices are now in __________⁵ use, not only by government agencies and high-security __________⁶ operations, but also by security-conscious private __________⁷. Computer biometric __________⁸ help secure information on __________⁹ and other data __________¹⁰ devices. On printers and fax machines, they __________¹¹ that the intended recipients receive __________¹² documents sent. Biometric devices can make it easier to __________¹³ and monitor entry to high-security areas. Biometrics is also the __________¹⁴ of face __________¹⁵ technology used in __________¹⁶ with camera surveillance or special biometric photos.