After it takes multiple scans, you can align and merge them into a single model.

FORBES: 3D Scanner from NextEngine Makes it Possible to Capture an Object

Mr. Page, a maintenance technician who lives in Clearfield, Utah, learned that his cumulative exposure from multiple scans he received at Intermountain was 97.3 mSv.

WSJ: New Tracking of a Patient's Radiation Exposure

But it isn't clear whether the risk is the same from cumulative exposure in smaller doses, such as multiple CT scans each delivering 10 mSvs.

WSJ: New Tracking of a Patient's Radiation Exposure

The study used insurance claims data and couldn't tell when patients got CT scans of multiple parts of the body at the same time, a common occurrence.

FORBES: Technology

To approve applicants, the TSA requires fingerprints and iris scans along with multiple forms of identification like driver's licenses and passports.

FORBES: Magazine Article