<SUBMISSION>
<ACCESSION-NUMBER>0001002014-12-000487
<TYPE>3
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20120821
<FILING-DATE>20120910
<DATE-OF-FILING-DATE-CHANGE>20120910
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>Salas Alfonso
<CIK>0001557547
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>3
<ACT>34
<FILE-NUMBER>000-30414
<FILM-NUMBER>121083626
</FILING-VALUES>
<MAIL-ADDRESS>
<STREET1>2106 WEST 33RD AVENUE
<CITY>VANCOUVER
<STATE>A1
<ZIP>V6M 1B9
</MAIL-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>ALR TECHNOLOGIES INC.
<CIK>0001087022
<ASSIGNED-SIC>3669
<IRS-NUMBER>880225807
<STATE-OF-INCORPORATION>NV
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>7400 BEAUFONT SPRINGS DRIVE
<STREET2>SUITE 300
<CITY>RICHMOND
<STATE>VA
<ZIP>23225
<PHONE>(804) 554-3500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7400 BEAUFONT SPRINGS DRIVE
<STREET2>SUITE 300
<CITY>RICHMOND
<STATE>VA
<ZIP>23225
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>ALR TECHNOLOGIES INC
<DATE-CHANGED>19990524
</FORMER-COMPANY>
</ISSUER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2012-08-21</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001087022</issuerCik>
        <issuerName>ALR TECHNOLOGIES INC.</issuerName>
        <issuerTradingSymbol>ALRT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001557547</rptOwnerCik>
            <rptOwnerName>Salas Alfonso</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2106 WEST 33RD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V6M 1B9</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>307738</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.07</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2012-08-21</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-08-21</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>250000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <ownerSignature>
        <signatureName>ALFONSO SALAS</signatureName>
        <signatureDate>2012-09-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
