Some Los Angeles schools are planning to use controversial fingerprint-scan technology to expedite the distribution of school lunches. But some parents and civil rights groups say the system may put students' privacy at risk. District officials contend that the scans -- which are used to identify students buying lunches -- are not stored as fingerprints and cannot be re-created. The technology is being used in other districts in California, as well as in New Jersey and West Virginia, but has been banned in some states.

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