<record>
  <controlfield tag="001">339</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Implicit Authentication</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Active Authentication</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Smartphone Unlocking</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Smart Lock</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Mental Models</subfield>
  </datafield>
</record>