<SUBMISSION>
<ACCESSION-NUMBER>0001104659-10-017856
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20100324
<FILING-DATE>20100331
<DATE-OF-FILING-DATE-CHANGE>20100331
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>HUMPHREYS STEVEN
<CIK>0001229295
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-34137
<FILM-NUMBER>10721412
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>6623 DUMBARTON CIRCLE
<CITY>FREMONT
<STATE>CA
<ZIP>94555
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ACTIVIDENTITY CORP
<CIK>0001183941
<ASSIGNED-SIC>7372
<IRS-NUMBER>450485038
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0930
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>6623 DUMBARTON CIRCLE
<CITY>FREMONT
<STATE>CA
<ZIP>94555
<PHONE>5105741792
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>6623 DUMBARTON CIRCLE
<CITY>FREMONT
<STATE>CA
<ZIP>94555
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ACTIVCARD CORP
<DATE-CHANGED>20020828
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-03-24</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001183941</issuerCik>
        <issuerName>ACTIVIDENTITY CORP</issuerName>
        <issuerTradingSymbol>ACTI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001229295</rptOwnerCik>
            <rptOwnerName>HUMPHREYS STEVEN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ACTIVIDENTITY CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>6623 DUMBARTON CIRCLE</rptOwnerStreet2>
            <rptOwnerCity>FREMONT</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94555</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-03-24</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2010-03-24</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>15000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>70000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Award of Restricted Stock Units under the Issuer's 2004 Equity Incentive Plan that vests in equal monthly installments over a one-year period from the Transaction Date. The shares of common stock underlying such award will be issued to the Reporting Person in accordance with such vesting schedule. The award was granted to the Reporting Person as a part of the annual grants to non-employee directors.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Alexander J. Craig, by power of attorney</signatureName>
        <signatureDate>2010-03-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
