Document:

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                                                                    EXHIBIT 10.8

                  ADDENDUM TO AND EXTENSION OF YORK, U.K. LEASE

         THIS ADDENDUM TO AND EXTENSION OF YORK, U.K. LEASE ("Addendum") amends
and extends the Lease between BIO-METRICS PROPERTIES, LTD. ("Landlord") and
ACCENT OPTICAL TECHNOLOGIES (U.K.) LTD. (formerly known as ACCENT SEMICONDUCTOR
TECHNOLOGIES (U.K.) LTD., "Tenant") dated July 28, 2000 ("Lease").

         The parties hereby agree as follows to amend the Lease to effect the
following:

         1.       Section 1.1.13 shall be amended to read as follows: "The
"Term" shall mean the "Initial Term" and the "Extended Term." The "Initial Term"
shall mean the period from July 28, 2000 to February 28, 2003 and the "Extended
Term" shall mean the period from March 1, 2003 to February 28, 2006." Unless
otherwise defined herein, defined terms shall have the meaning or definition
used in the Lease.

         2.       Notwithstanding anything contained in the Lease, Tenant shall
be responsible for "Operating Expenses" and "Repairs." For purposes of this
Agreement, "Operating Expenses" shall include all costs and expenses of every
kind and nature incurred with respect to the use, occupancy, maintenance and
operation of the Premises, except Repairs (as defined herein). For purposes of
this Agreement, "Repairs" shall mean (i) the expenses listed in Section 5.2 of
Exhibit 5 for the Initial Term through the date of this Addendum; and (ii) for
the period from the date of this Addendum through termination of the Lease,
including the Extended Term, the maintenance and repairs listed in Sections 5.1
and 5.2 for which Tenant shall be responsible at Tenant's cost; provided, if the
cost of such structural repairs in Section 5.1 exceeds or would exceed $50,000
in any one lease year (3/1 to 2/28, 2/29 in a leap year; provided, for such
purposes the period from date of execution of this Addendum to 2/28/03 shall be
included in the period 3/1/03 to 2/29/04), Tenant may elect to terminate the
Lease, rather than make such repair(s). Landlord agrees that, if the cost of any
such repair is covered by Landlord's insurance policy for the Building, Landlord
will make the proceeds available to Tenant to make any repairs under Section
5.1; provided, Tenant shall pay fifty percent (50%) of any deductible up to
$50,000 per lease year. Notwithstanding anything contained herein, If Landlord
determines that Tenant cannot continue to occupy the Premises without structural
repair or other maintenance to the portions of the Building not comprising the
Premises for any reason, then Landlord may elect to terminate the Lease, rather
than make such repairs or perform such maintenance, unless Tenant agrees to make
such repairs or perform such maintenance within fifteen (15) days of notice of
the need for such repairs or maintenance from Landlord.

         3.       Additionally, Tenant shall be responsible for all Utilities
and Tenant shall pay when due all charges for services and Utilities incurred in
connection with the use, occupancy, operation and maintenance of the Premises,
including (but not limited to) charges for fuel, water, gas, electricity,
sewage, disposal, power, refrigeration, air conditioning, telephone and
janitorial services. If any utility services are provided through Landlord,
charges to Tenant shall be comparable to the prevailing rates for comparable
services. If there are other tenants on the property and the charges are not
separately metered or stated, Landlord shall apportion the

                                                                          PAGE 1

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charges on an equitable basis and Tenant shall pay its apportioned share on
demand for the Premises.

         4.       The parties agree that the Lease, as amended herein, shall
remain in full force and effect through the remainder of the Term, subject to
earlier cancellation as provided herein. The Lease, as amended herein, shall be
interpreted to give full force and effect to the modifications herein.

         IN WITNESS WHEREOF, the undersigned have executed this Agreement
effective this 28th day of January 2003.

EXECUTED as a DEED by                        )

BIO-METRICS PROPERTIES                       )

Authorized officers                          )

             Director

             Director/Secretary   /s/

EXECUTED as a DEED by                        )

ACCENT SEMICONDUCTOR                         )

TECHNOLOGIES (U.K.) LTD.                     )

Acting by its duly authorized officers       )

             Director  /s/

             Director/Secretary

                                                                          PAGE 2

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                                    EXHIBIT 5

                       Exhibit 5. Repairs and Maintenance

         5.1      Major Structural Repairs. Subject to Section 2 of the Addendum
to the Lease, if any of the following repairs are necessary to the Premises,
Tenant, subject to its rights to cancel the Lease or its rights to insurance
proceeds from Landlord under Section 2 of the Addendum, shall make the following
repairs:

         (1)      Repairs and maintenance of the roof and gutters, exterior
walls (including painting), bearing walls, structural members, floor slabs, and
foundation.

         (2)      Repair of sidewalks, driveways, curbs, parking areas, and
areas used in common by Tenant and Landlord or tenants of other portions of the
same building.

         (3)      Repair and maintenance of exterior water, sewage, gas, and
electrical services up to the point of entry to the Premises.

         (4)      Repair of the heating and air conditioning system other than
ordinary maintenance.

         5.2      Tenant's Obligations. The following as to the Premises shall
be the responsibility of Tenant:

         (1)      Repair of interior walls, ceilings, doors, windows, and
related hardware, light fixtures, switches, and wiring and plumbing from the
point of entry to the Premises.

         (2)      Any repairs necessitated by the negligence or willful
misconduct of Tenant, its agents, employees, and invitees, including repairs to
the Building that would otherwise be covered under Section 5.1.

         (3)      Ordinary maintenance of the heating and air conditioning
system and any repairs necessary because of improper maintenance.

         (4)      Any repairs or alterations required under Tenant's obligation
to comply with laws and regulations as set forth in the Lease.

         (5)      All other repairs to the Premises.

                                                                          PAGE 3

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January 28, 2003

Bio-Metrics Properties, Ltd.

RE: YORK LEASE

         Accent Optical Technologies (U.K.) Ltd. ("Accent") and Bio-Metrics
Properties, Ltd. ("Bio-Rad") have entered into an amendment and extension of the
York Lease today. As part of the Amendment and Extension, Accent agreed to bear
certain operating costs during the initial term of the York Lease and those
operating costs and certain repair costs during the extension period.

         Certain costs to be borne under the lease by one party have been
previously paid or borne by the other party ("York Lease Costs"). Further, there
are certain amounts owing between the parties (and their affiliates) under the
Supply and Transition Services Agreement, which amounts together with the York
Lease Costs, are documented in an attachment hereto.

         The parties agree that such amounts owed between the parties
(approximately $1,538,477 due Accent and approximately $1,041,765 due Bio-Rad)
shall offset each other entirely. The offset shall be in full and final
settlement of such amounts and Accent waives and releases Bio-Rad from any claim
for the difference between the amounts. As described in the attachment, the
offset shall not include $299,424, consisting of $100,000 collected from TSMC,
$36,220 from Intel owed to Accent, and $163,204 (originally Singapore Dollars
$262,826.13) from Data Storage that Bio-Rad has collected. Bio-Rad will assure
that such $299,424 be promptly remitted to Accent's United Kingdom affiliate. To
the extent this letter relates to obligations of a party under the York Lease,
this letter shall be deemed to be an amendment to such lease. Please acknowledge
below your agreement as to such waiver/offset of certain costs/expenses owing
between the parties, except such $ 299,424.

         Very truly yours,

         /s/ Gregory A. Kaiser

         Gregory A. Kaiser
         President

                                                                          PAGE 1

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ACKNOWLEDGED AND AGREED:

BIO-METRICS PROPERTIES

Authorized officers

Director

Director/Secretary /s/

                                                                          PAGE 2

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LEASE ADJUSTMENTS DUE ACCENT:

<TABLE>
<CAPTION>
SCHEDULE 1

ACCENT OPTICAL TECHNOLOGIES (U.K.) LTD

FACILITIES COSTS TO RECHARGE TO BIO-RAD                                                                             [GB(POUND)]

                                                        Comm-                                            Property     Health &
                                           Total     unications        Gas      Power         Water         Tax        Safety
                                         --------    ----------      ------    -------        -----      --------     --------
<S>                                      <C>         <C>             <C>       <C>            <C>        <C>        <C>
Base Period                               132,578        36,708       8,668     42,117        5,622        39,463
                                         ========    ==========      ======    =======        =====      ========     =======
Year ended 31 July 2001                   192,733        36,539      10,412     54,960        3,447        45,750      41,624
                                         --------    ----------      ------    -------        -----      --------     -------
Year ended 31 July 2002                   170,155        39,120      12,514     64,517        2,531        51,473
                                         --------    ----------      ------    -------        -----      --------     -------
1 August 2002 to date (pre VAT)            60,696        17,399         418     15,820          619        26,440           0
                                         --------    ----------      ------    -------        -----      --------     -------
subttl                                    423,583        93,058      23,345    135,296        6,597       123,663      41,624

VAT @ 17.5%                                52,486        16,285       4,085     23,677        1,154                     7,284
                                         --------    ----------      ------    -------        -----      --------     -------
Due to Accent at 11/30/02                 476,069       109,343      27,430    158,973        7,751       123,663      48,908
                                         ========    ==========      ======    =======        =====      ========     =======
Converted to US $$ @ $1.598              $760,759
                                         ========
</TABLE>

Please Note that the 41,624 Health and Safety issue was required to be installed
and was agreed to be paid for by Bio-Rad.

Balances Under the Original Transaction Agree and Service Agreements

ACCENT OPTICAL TECHNOLOGIES
BIO-RAD RECONCILIATION

US DOLLARS

<TABLE>
<CAPTION>
                                                Due                      Due                Net Due to
                                            Bio-Rad (1)               Accent (2)              Bio-Rad
                                            -----------               ----------            ----------
<S>                                         <C>                       <C>                   <C>
US balance per ledger                         335,086                  194,288                140,798
UK balance per ledger                         706,679                  583,430                123,249
Balance at 30 Nov 02*                       1,041,765                  777,718                264,048
</TABLE>

(EXCLUDES $299,424 OF PAYMENTS MADE TO BIO-RAD BY TSMC, INTEL AND DATA
STORAGE[CHARTERED SEMI]

(1) BALANCES DUE BIO-RAD INCLUDE BUT ARE NOT LIMITED TO:

Distribution Agreement fees, IT charges, Moving cost of Randolph, Expenses that
Bio-Rad paid on behalf of Accent, Severance and retention payments. For the
avoidance of doubt, the

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balances due to Bio-Rad which are to be offset hereby does not include any
amounts due or to become due to Bio-Rad under that certain Seller Note of Accent
in favor of Bio-Rad in the original principal amount of $8,000,000 dated July
31, 2002.

(2)      BALANCES DUE ACCENT INCLUDE BUT ARE NOT LIMITED TO:

Receivables Payments collected by Bio-Rad (excepting the 3 noted payments), CDS
royalties for units shipped prior to July 31, 2000. This category amount does
not include the York facilities amounts noted in Schedule 1. This category
amount plus the York facilities amounts noted in Schedule 1 above shall be
offset entirely by the balances due Bio-Rad as described above. As noted in the
side letter to which this document is attached, Bio-Rad shall remit to Accent
the 3 noted payments made to Bio-Rad by TSMC, Intel and Data Storage (Chartered
Semi). Nothing herein or in the letter to which this attachment relates will
affect Accent's ability to collect from Bio-Rad any future payments received by
Bio-Rad on accounts receivable of Accent or on accounts receivable that have
been assigned/sold by Bio-Rad to Accent

                                                                          PAGE 2<PAGE>

                                                                    EXHIBIT 10.9

                          ADDENDUM TO YORK, U.K. LEASE
                                 (FEBRUARY 2004)

         THIS ADDENDUM TO YORK, U.K. LEASE ("Second Addendum") amends the Lease
between BIO-METRICS PROPERTIES, LTD. ("Landlord") and ACCENT OPTICAL
TECHNOLOGIES (U.K.) LTD. (formerly known as ACCENT SEMICONDUCTOR TECHNOLOGIES
(U.K.) LTD., "Tenant") dated July 28, 2000 ("Original Lease"), which Original
Lease was previously amended by an Addendum to and Extension of Lease dated
January 28, 2003 ("First Addendum") (such Original Lease and First Addendum
being referred to herein collectively as the "Lease"). The Lease as amended by
this Second Addendum shall be referred to as the "Amended Lease."

         The parties hereby agree as follows to amend the Lease to effect the
following:

         1.       Section 1.1.13 (as previously amended by the First Addendum)
shall be amended to read as follows: "The "Term" shall mean the "Initial Term,"
the "Extended Term" and, if any of the Options (as defined in Section 4.7) are
exercised, the "Option Terms" (as defined in the next sentence). The "Initial
Term" shall mean the period from July 28, 2000 to February 28, 2003, the
"Extended Term" shall mean the period from March 1, 2003 to February 28, 2006"
and the "Option Terms" shall mean March 1, 2006 to February 28, 2007 as to the
first Option under Section 4.7 of the Amended Lease and March 1, 2007 to
February 29, 2008 as to the second Option under Section 4.7 of the Amended
Lease. Unless otherwise defined herein, defined terms shall the meaning or
definition used in the Lease.

         2.       Notwithstanding anything contained in the Lease, Tenant shall
be responsible for "Operating Expenses" and "Repairs." For purposes of this
Agreement, "Operating Expenses" shall include all costs and expenses of every
kind and nature incurred with respect to the use, occupancy, maintenance and
operation of the Premises, except Repairs (as defined herein). For purposes of
this Agreement, "Repairs" shall mean (i) the expenses listed in Section 5.2 of
Exhibit 5 to this Second Addendum for the Initial Term through the date of this
Addendum; and (ii) for the period from the date of this Addendum through
termination of the Lease, including the Extended Term, and, if applicable, the
Option Terms, the maintenance and repairs listed in Exhibit 5 for which Tenant
shall be responsible at Tenant's cost; provided, if the cost of such structural
repairs in Section 5.1 exceeds or would exceed $50,000 in any one lease year
(3/1 to 2/28, 2/29 in a leap year; provided, for such purposes the period from
1/28/03 to 2/28/03 shall be included in the period 3/1/03 to 2/29/04), Tenant
may elect to terminate the Lease, rather than make such repair(s). Landlord
agrees that, if the cost of any such repair is covered by Landlord's insurance
policy for the Building, Landlord will make the proceeds available to Tenant to
make any repairs under Section 5.1; provided, Tenant shall pay fifty percent
(50%) of any deductible up to $50,000 per lease year. Notwithstanding anything
contained herein, If Landlord determines that Tenant can not continue to occupy
the Premises without structural repair or other maintenance to the portions of
the Building not comprising the Premises (due to violations of building codes,
condemnation due to the property's condition or similar factors), then Landlord
may elect to terminate the Lease, unless Tenant agrees to make such repairs or
perform such

                                                                          PAGE 1
<PAGE>

maintenance within fifteen (15) days of notice of the need for such repairs or
maintenance from Landlord.

         3.       A new Section 4.7 shall be added to the Lease to read as
                  follows:

         "Section 4.7. RENEWAL OPTION. If the lease is not in default when each
         option is exercised or when the renewal term is to commence, Tenant
         shall have the option to renew this lease for two successive terms of
         one year each (the "Options"), as follows:

         (1)      Each of the renewal terms shall commence on the day following
         expiration of the preceding term, the current term being the Extended
         Term, with the first option to cover the period from March 1, 2006 to
         February 28, 2007 and the second option to cover the period from March
         1, 2007 to February 29, 2008.

         (2)      The option may be exercised by written notice to Landlord
         given not less than 60 days before the last day of the expiring term.
         Giving such notice shall be sufficient to make the lease binding for
         the renewal term without further act of the parties.

         (3)      The terms and conditions of the lease for each renewal term
         shall be identical with the original term, except for rent and that
         Tenant will no longer have any option to renew this lease that has been
         exercised. The monthly rent in Section 2 of the Lease shall be
         increased to 12,100 pounds sterling per month for the First Option
         Period (a 10% increase from the Extended Term) and to 13,210 pounds
         sterling for the Second Option Period (a 10% increase). Section 2 of
         the Lease is hereby amended to reflect such rent changes."

         4.       The parties agree that the Lease, as amended herein, shall
         remain in full force and effect through the remainder of the Term,
         subject to earlier cancellation as provided herein. The Lease, as
         amended herein, shall be interpreted to give full force and effect to
         the modifications herein.

         IN WITNESS WHEREOF, the undersigned have executed this Agreement
effective this 9th day of February 2004.

EXECUTED as a DEED by                      )

BIO-METRICS PROPERTIES                     )

Authorized officers                        )

                  Director  /s/

                  Director/Secretary  /s/

EXECUTED as a DEED by                      )

ACCENT OPTICAL                             )

TECHNOLOGIES (U.K.) LTD.                   )

Acting by its duly authorized officers     )

                  Director

                  Director/Secretary /s/

<PAGE>

ACCENT OPTICAL                             )

TECHNOLOGIES (U.K.) LTD.                   )

Acting by its duly authorized officers     )

                  Director /s/

                  Director/Secretary /s/

                                                                          PAGE 3
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                                    EXHIBIT 5

                       Exhibit 5. Repairs and Maintenance

         5.1      Major Structural Repairs. Subject to Section 2 of the Addendum
to the Lease, if any of the following repairs are necessary to the Premises,
Tenant, subject to its rights to cancel the Lease or its rights to insurance
proceeds from Landlord under Section 2 of the Addendum, shall make the following
repairs:

         (1)      Repairs and maintenance of the roof and gutters, exterior
walls (including painting), bearing walls, structural members, floor slabs, and
foundation.

         (2)      Repair of sidewalks, driveways, curbs, parking areas, and
areas used in common by Tenant and Landlord or tenants of other portions of the
same building.

         (3)      Repair and maintenance of exterior water, sewage, gas, and
electrical services up to the point of entry to the Premises.

         (4)      Repair of the heating and air conditioning system other than
ordinary maintenance.

         5.2      Tenant's Obligations. The following as to the Premises shall
be the responsibility of Tenant:

         (1)      Repair of interior walls, ceilings, doors, windows, and
related hardware, light fixtures, switches, and wiring and plumbing from the
point of entry to the Premises.

         (2)      Any repairs necessitated by the negligence or willful
misconduct of Tenant, its agents, employees, and invitees, including repairs to
the Building that would otherwise be covered under Section 5.1.

         (3)      Ordinary maintenance of the heating and air conditioning
system and any repairs necessary because of improper maintenance.

         (4)      Any repairs or alterations required under Tenant's obligation
to comply with laws and regulations as set forth in the Lease.

         (5)      All other repairs to the Premises.

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